# Error: Merge tiles: failed to load tile!

**URL:** <https://community.pix4d.com/t/error-merge-tiles-failed-to-load-tile/9124>\
**Category:** PIX4Dmapper Questions/Troubleshooting\
**Created:** [September 9, 2019, 11:51am UTC](https://community.pix4d.com/t/error-merge-tiles-failed-to-load-tile/9124 "2019-09-09T11:51:36Z")\
**Posts on this page:** 14\
**Page:** 1

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**Author:** ![jonydaar](https://avatars.discourse-cdn.com/v4/letter/j/9d8465/32.png) [@jonydaar](https://community.pix4d.com/u/jonydaar)\
**Post date:** [September 9, 2019, 11:51am UTC](https://community.pix4d.com/t/error-merge-tiles-failed-to-load-tile/9124/1 "2019-09-09T11:51:36Z")

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Hi,

The last step failed. Please help.

Thank,  
Jony

 ![Capture2](https://global.discourse-cdn.com/pix4d/original/1X/fdecb8130f8f1064fba4682bb98ad4d82966a4fa.jpeg)

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<div class="post-metadata">

**Author:** ![Pix4D\_Alumni\_MV](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/pix4d_alumni_mv/32/2071_2.png) [@Pix4D\_Alumni\_MV](https://community.pix4d.com/u/Pix4D_Alumni_MV)\
**Post date:** [September 9, 2019, 12:05pm UTC](https://community.pix4d.com/t/error-merge-tiles-failed-to-load-tile/9124/2 "2019-09-09T12:05:45Z")

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Hi @jonydaar,

Could you please upload directly your \*.log file in this thread?  
Thanks,  
Best

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<div class="post-metadata">

**Author:** ![jonydaar](https://avatars.discourse-cdn.com/v4/letter/j/9d8465/32.png) [@jonydaar](https://community.pix4d.com/u/jonydaar)\
**Post date:** [September 9, 2019, 1:02pm UTC](https://community.pix4d.com/t/error-merge-tiles-failed-to-load-tile/9124/3 "2019-09-09T13:02:09Z")

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[2019.09.09 14:05:43][53%RAM][7%CPU][Info]: Merge DSM tiles [322/885] elapsed 22m:43s:893ms …  
[2019.09.09 14:05:43][53%RAM][8%CPU][Warning]: Warning w9020: GDAL Error \<1\> LZWDecode:Corrupted LZW table at scanline 237  
[2019.09.09 14:05:43][53%RAM][8%CPU][Warning]: Warning w9020: GDAL Error \<1\> TIFFReadEncodedStrip() failed.  
[2019.09.09 14:05:43][53%RAM][8%CPU][Warning]: Warning w9020: GDAL Error \<1\> E:/merged/merged/3\_dsm\_ortho/1\_dsm/tiles/merged\_dsm\_17\_10.tif, band 1: IReadBlock failed at X offset 0, Y offset 237  
[2019.09.09 14:05:43][53%RAM][8%CPU][Warning]: Warning w9020: GDAL Error \<1\> GetBlockRef failed at X block offset 0, Y block offset 237  
[2019.09.09 14:05:43][53%RAM][8%CPU][Error]: Merge tiles: failed to load tile!  
[2019.09.09 14:05:44][53%RAM][6%CPU][Error]: Merge DSM tiles failed!  
[2019.09.09 14:05:44][53%RAM][6%CPU][Error]: \>\>\>Merge DSM tiles\<\<\< failed with error (failed to run a step!)!  
[2019.09.09 14:05:44][53%RAM][6%CPU][Error]: \>\>\>Merge DSM tiles\<\<\< failed with error (failed to run a step!)!  
[2019.09.09 14:15:34][54%RAM][12%CPU][Processing]: Substep Ortho dsm merge finished.  
[2019.09.09 14:15:34][54%RAM][12%CPU][Processing]: Substep Ortho dsm finished.  
[2019.09.09 14:15:35][54%RAM][12%CPU][Info]: OS Power Save: Enable  
[2019.09.09 14:15:35][54%RAM][12%CPU][Info]: \>\>\>Step3\<\<\< done in 16h:47m:56s:029ms / 1007.93 min.  
[2019.09.09 14:15:35][54%RAM][12%CPU][Processing]: Step2Done  
[2019.09.09 14:15:37][54%RAM][10%CPU][Info]: DataProvider: closing  
[2019.09.09 14:17:45][73%RAM][10%CPU][Info]: Project results: loading …  
[2019.09.09 14:18:27][68%RAM][16%CPU][Info]: Project: Cameras updated  
[2019.09.09 14:18:27][68%RAM][16%CPU][Info]: Project: Cameras loaded  
[2019.09.09 14:19:20][75%RAM][11%CPU][Info]: Project: Calibrated tracks loaded  
[2019.09.09 14:21:47][83%RAM][14%CPU][Info]: Project: loading done.  
[2019.09.09 14:22:26][78%RAM][13%CPU][Warning]: Warning w9021a: DataSender - Network connection problem.  
[2019.09.09 14:22:26][78%RAM][13%CPU][Warning]: Warning w9021a: DataSender - Network connection problem.  
[2019.09.09 14:39:25][76%RAM][8%CPU][UI]: Processing Options clicked.  
[2019.09.09 14:44:02][76%RAM][6%CPU][Warning]: Warning w0032: Results for this project are already generated. By starting the processing again existing results will be overwritten.  
[2019.09.09 14:44:25][76%RAM][5%CPU][Warning]: Warning w0032: Results for this project are already generated. By starting the processing again existing results will be overwritten.

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<div class="post-metadata">

**Author:** ![Pix4D\_Alumni\_MV](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/pix4d_alumni_mv/32/2071_2.png) [@Pix4D\_Alumni\_MV](https://community.pix4d.com/u/Pix4D_Alumni_MV)\
**Post date:** [September 9, 2019, 1:03pm UTC](https://community.pix4d.com/t/error-merge-tiles-failed-to-load-tile/9124/4 "2019-09-09T13:03:09Z")

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No, please use this option to upload it:

 ![image](https://global.discourse-cdn.com/pix4d/original/1X/437e4e7dfefb6c502457d968d6000ffaec05658b.png)

Thank you!

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<div class="post-metadata">

**Author:** ![jonydaar](https://avatars.discourse-cdn.com/v4/letter/j/9d8465/32.png) [@jonydaar](https://community.pix4d.com/u/jonydaar)\
**Post date:** [September 9, 2019, 1:06pm UTC](https://community.pix4d.com/t/error-merge-tiles-failed-to-load-tile/9124/5 "2019-09-09T13:06:26Z")

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I can’t upload txt file.  
I uploaded it to pcloud.  
here is the link:

> **[Send large files up to 5GB for free](https://transfer.pcloud.com/download.html?code=5ZyJSJkZ4uv48ki6v0RZqCvBZur1UKJJJVQ8fHOzzkXmJvzaKPTcy&label=Transfer%20-%20files%20sent%20%28to%20recipient%29)**
>
> With pCloud Transfer you can download large files without registration for free! You can also send your own files to your colleagues and friends.

Thanks you!!!

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<div class="post-metadata">

**Author:** ![Pix4D\_Alumni\_MV](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/pix4d_alumni_mv/32/2071_2.png) [@Pix4D\_Alumni\_MV](https://community.pix4d.com/u/Pix4D_Alumni_MV)\
**Post date:** [September 9, 2019, 1:15pm UTC](https://community.pix4d.com/t/error-merge-tiles-failed-to-load-tile/9124/6 "2019-09-09T13:15:41Z")

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Hi @jonydaar,

Why do not you upload the \*.log file that has been generated during the processing?  
Menu-Process-Open-Results-Folder

It contains many information that are useful for us that are not shown in the sample you sent.

Thanks,  
Best

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<div class="post-metadata">

**Author:** ![jonydaar](https://avatars.discourse-cdn.com/v4/letter/j/9d8465/32.png) [@jonydaar](https://community.pix4d.com/u/jonydaar)\
**Post date:** [September 9, 2019, 2:43pm UTC](https://community.pix4d.com/t/error-merge-tiles-failed-to-load-tile/9124/7 "2019-09-09T14:43:26Z")

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The website not allow to upload txt file. I uploaded it to the cloud and posted the download link.

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<div class="post-metadata">

**Author:** ![Pix4D\_Alumni\_MV](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/pix4d_alumni_mv/32/2071_2.png) [@Pix4D\_Alumni\_MV](https://community.pix4d.com/u/Pix4D_Alumni_MV)\
**Post date:** [September 23, 2019, 6:36am UTC](https://community.pix4d.com/t/error-merge-tiles-failed-to-load-tile/9124/8 "2019-09-23T06:36:45Z")

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Hi @jonydaar,

You are right. Adding files was block for new users.  
By now it should be okay. I am very sorry for the inconvenience.  
Now you can add your files.

Best

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<div class="post-metadata">

**Author:** ![David\_Pechacek](https://avatars.discourse-cdn.com/v4/letter/d/5e9695/32.png) [@David\_Pechacek](https://community.pix4d.com/u/David_Pechacek)\
**Post date:** [September 30, 2020, 4:59pm UTC](https://community.pix4d.com/t/error-merge-tiles-failed-to-load-tile/9124/9 "2020-09-30T16:59:52Z")

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[F13-16 short.log](https://community.pix4d.com/uploads/short-url/gdyLEsjR4hx9jpn24riwp9jbsUJ.log) (3.9 MB)

Same issue, how about this log file?  
Full Log file is ~29,046KB max upload size is ~4KB. If you need the full file, please provide an alternate upload option.

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<div class="post-metadata">

**Author:** ![Beata](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/beata/32/187_2.png) [@Beata](https://community.pix4d.com/u/Beata)\
**Post date:** [October 5, 2020, 11:25am UTC](https://community.pix4d.com/t/error-merge-tiles-failed-to-load-tile/9124/10 "2020-10-05T11:25:01Z")

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Hi @David_Pechacek,

No, it’s OK. We don’t need the full log. We found all information we need in it.

Could you please do a test and slightly reduce the RAM cores and run Step 3 again?

 ![image](https://global.discourse-cdn.com/pix4d/original/2X/8/84fbb9b0f36e4d712367e4728071fb446d2257b3.png)

Afterwards, please respond with an update.

Thanks!

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<div class="post-metadata">

**Author:** ![David\_Pechacek](https://avatars.discourse-cdn.com/v4/letter/d/5e9695/32.png) [@David\_Pechacek](https://community.pix4d.com/u/David_Pechacek)\
**Post date:** [October 27, 2020, 2:52pm UTC](https://community.pix4d.com/t/error-merge-tiles-failed-to-load-tile/9124/11 "2020-10-27T14:52:32Z")

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Beata,

That’s actually what I had done already. But I am on a new PC now, so cannot retest at the moment.

We did get what was needed (point cloud) the ortho was just a bonus.

Thanks,

Anthony Herman, PE

**KLJ - Devils Lake**

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<div class="post-metadata">

**Author:** ![Beata](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/beata/32/187_2.png) [@Beata](https://community.pix4d.com/u/Beata)\
**Post date:** [October 30, 2020, 11:12am UTC](https://community.pix4d.com/t/error-merge-tiles-failed-to-load-tile/9124/12 "2020-10-30T11:12:16Z")

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Hi David,

OK, thank you for the information.

So I will add just a note. The second step to solve this problem would be unselecting the Merge Tiles option and verifying if the process finishes successfully. If yes, that would indicate an issue with RAM.

Best

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<div class="post-metadata">

**Author:** ![himalay24sharma](https://avatars.discourse-cdn.com/v4/letter/h/9fc348/32.png) [@himalay24sharma](https://community.pix4d.com/u/himalay24sharma)\
**Post date:** [April 15, 2022, 6:00am UTC](https://community.pix4d.com/t/error-merge-tiles-failed-to-load-tile/9124/13 "2022-04-15T06:00:27Z")

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Dear Beata, same problem happens with us and for that please see our logs. kindly share email id for logs as our projects log crosses 4MB

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<div class="post-metadata">

**Author:** ![Nikoleta\_Dimopoulou](https://avatars.discourse-cdn.com/v4/letter/n/53a042/32.png) [@Nikoleta\_Dimopoulou](https://community.pix4d.com/u/Nikoleta_Dimopoulou)\
**Post date:** [April 19, 2022, 10:40am UTC](https://community.pix4d.com/t/error-merge-tiles-failed-to-load-tile/9124/14 "2022-04-19T10:40:27Z")

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Hi @himalay24sharma,

You can upload the log file [here](https://pix4d365-my.sharepoint.com/:f:/g/personal/nikoleta_dimopoulou_pix4d_com/EgJEsfI_DHtOuIFDCkWp9tgBFNdtAAi51OD1tzrgBGWjsw?e=r7Xbd6).

Best,