When launching WorkflowGen for the first time after installing it, you might receive the error
Server Error in '/wfgen/' Application, with the message
CS0016: Could not write to output file '[DRIVE:]\Windows\Microsoft.NET\Framework\[VERSION]\Temporary ASP.NET Files\...
This is due to security permissions on the
Temporary ASP.NET Files and
[DRIVE:]\Windows\temp folders. To solve this issue, navigate to each of the folders, and assign full control permissions to the
NETWORK SERVICE users.