An updated IDA 9.4 installer is available
Shortly after releasing IDA 9.4, we identified a bug in the initial installer. Under certain conditions it could cause IDA to crash when used with custom processor modules compiled against the C++ SDK.
We've corrected the issue and published an updated 9.4 installer. If you downloaded IDA 9.4 before today, we recommend re-downloading and reinstalling to get the fix.
We will release hashes for the fixed installer later.