| Problem | Cause | Workaround | |--------|-------|-------------| | Setup doesn’t start | Missing Visual C++ 2005 runtime | Install vcredist_x86 from 2005/2008 | | Error 1935 | .NET Framework 2.0/3.5 missing | Enable .NET 3.5 in Windows Features | | HASP driver error | Legacy HASP HL driver not signed | Disable driver signature enforcement on Win 10 | | License server timeout | Old FlexLM / nodelocked license | Use .exe (common in CNC forums) – but legally risky |
: Some legacy setups require entering a serial number and activation code found in a readme.txt file within the installer . artcam pro 91 installation upd