# Error Step 1 Mapper **URL:** \ **Category:** PIX4D International\ **Created:** [September 19, 2023, 7:31pm UTC](https://community.pix4d.com/t/error-step-1-mapper/27763 "2023-09-19T19:31:59Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![jlmitchell42](https://avatars.discourse-cdn.com/v4/letter/j/82dd89/32.png) [@jlmitchell42](https://community.pix4d.com/u/jlmitchell42)\ **Post date:** [September 19, 2023, 7:31pm UTC](https://community.pix4d.com/t/error-step-1-mapper/27763/1 "2023-09-19T19:31:59Z")
![image](https://global.discourse-cdn.com/pix4d/original/2X/e/e1557d4487141ff94c41a33e21bb354689bdf58b.png) I can’t figure out the reason for “[Error]: Caught exception during initial processing!”. ---
**Author:** ![Rosana\_Lin](https://avatars.discourse-cdn.com/v4/letter/r/71e660/32.png) [@Rosana\_Lin](https://community.pix4d.com/u/Rosana_Lin)\ **Post date:** [September 20, 2023, 2:45am UTC](https://community.pix4d.com/t/error-step-1-mapper/27763/2 "2023-09-20T02:45:18Z")
Hi @jlmitchell42 , I noticed this is the same post as this > [@Error Step 1](https://community.pix4d.com/t/error-step-1/27764/2): > > Hi @jlmitchell42 , Some basic checks: Ensure datasets and project folders are stored on a local hard drive (typically C:/ or D:/). Ensure the GPU driver is updated. Ensure the hardware meets the requirements: [Computer requirements - PIX4Dmapper](https://support.pix4d.com/hc/en-us/articles/115002439383-Computer-requirements-PIX4Dmapper?source=search) Ensure no anti-virus or firewall interfering with the processing Do a complete uninstallation and reinstall PIX4Dmapper: [How to completely uninstall PIX4Dmapper - PIX4Dmapper](https://support.pix4d.com/hc/en-us/articles/360000450103-How-to-completely-uninstall-PIX4Dmapper-PIX4Dmapper?source=search) If none of these helps, could you please share the complete log file? You c… I have replied to this post. I look forward to your reply there. Best regards, Rosana (she/her)