After the upgrade to HF4 or HF3 the customers are no longer able to edit or create a detection rule for a software resource. When they try to do so they receive the generic "Symantec Management Server Error - Internal server error" pop-up message.
Open a software resource for editing. On the "Rules" tab click either the edit icon or the "New" icon. It immediately throws the generic "Symantec Management Server Error" pop-up.
Or, in a Managed Software Delivery Policy click on the detection rule link. It immediately throws the generic "Symantec Management Server Error" pop-up.
When you create a new software resource it will create the default detection rule without error.
Nothing in the a.logs.
The Windows Application Event log has the following warning (truncated):