QCAD 3.23.0.0 / win7pro 32 bit / 4GB / 1e generation i7 2.6Ghz / HDD GeForce GT 520 Having the same problems with Qcad allready more then a year. Updated regularly somethimes with deïnstallation. As this did not solve the issues in the past. https://www.qcad.org/rsforum/viewtopic.php?p=24540#p24538 After reading Andrew reply I decide to fully wipe anything related to Qcad from the system Wednesday, early evening. Saved some of my own work to a stick, included security copies of some that were Qcad related as 'Qcad.ini'. Deïnstalled Qcad. Killed all leftovers related to Qcad, files and folder structures. Cleaned all references to Qcad and fairly related from the OS and the OS drive. Fought a little battle with the Win UAC. Killed all files that had literally entries related to Qcad or it files or folders from the OS drive. Did a similar sweep of the data drives but kept my personal stuff like text and doc files, reference links and so one. Wiped all qcad-masters downloaded from Github from the data drives. Rebooted successfully and checked for traces. Still some traces and deep wiped them, some at win level and some at DOS level. Rebooted successfully again. Checked again. Still some traces and marked them for deletion on boot. Rebooted successfully again. Checked again. Clean, Whew! Downloaded the 32bit installer and installed it. Started Qcad normally and preffered to reconfigure Qcad manually and not to introduce the old ini. Closed Qcad. Sequentially only moved one of my scripts back from the stick and ruled out all 'include' entries that should not be necesary. Sequentially started Qcad with debugger...All ok loading...Loaded my dxf testfile and tested my script...All ok at runtime. Sequentially removed script back. After all my scripts had passed this I finally reinstated all my script. Re-started Qcad normal... Loaded all my dxf testfiles and tested my scripts... Installed Qcad successfully and all is as would be expected. It's thursday 10:30