Use the "Copy this message to clipboard" and paste the text instead of screenshots as explained at https://dyndolod.info/Official-DynDOLOD-Support-Forum#Copy-and-Paste-Text
Use "Click on this link for additional explanations and help for this message" to open https://dyndolod.info/Messages/Can-Not-Copy-Resource:
"The system cannot find the path specified - The OS, UAC, antivir or some other 3rd party crap ware is blocking write access to the mentioned destination path. Add an exception to whatever it is that is blocking access."
Search this forum/thread for the error message to find similar posts as explained on the first post.
https://stepmodifications.org/forum/search/?q=system+cannot+find+path+specified&quick=1&type=forums_topic&nodes=223
https://stepmodifications.org/forum/topic/15604-texgen-error-cannot-copy-resource-the-system-can-not-find-the-path-specified/