In Engine logs some errors like "cCollectSoftwareDetected::FindApplication ... failed to save release for product" appear. And heuristic software is not created
Example :
071019-09:00:59.9205925L|010340|00001d10|Collector |cmEngine |cCollectSoftwareDete|000000|INFO | cCollectSoftwareDetected::FindApplication Total Commander 64-bit (Remove or Repair) failed to save release for product
Release : 12.9,14.0
Component : Client Automation