Forced to close RoboHelp after generating SSLs in order to edit content

I have reported this as a bug, but wonder whether any of you have had similar experiences and, if so, how you resolved it.

Have to close RoboHelp after generating SSLs in order to edit content

Steps to reproduce bug:

1. Open project from Visual Studio Source Control (Team Foundation Server).
2. Select a Single Source Layout and generate the output.
3. Try to edit a topic. The Check Out dialog box says "To modify this document, the files in the list below need to be checked out from version control. Do you want to check out these files."
4. Click Yes.

Results:
The Cannot Complete Operation dialog box appears. "The files in the list below could not be checked out from version control. Exclusive access to these files is required to modify this document."
Click Close, close RoboHelp, and restart RoboHelp.

Expected results:
The files should be checked out from version control with exclusive access when I click Yes to check them out.
When I look in Source Control Explorer, the file I tried to check out is not even checked out. Even manually locking the file for edit from Source Control does not free the file for editing in RoboHelp.

Thanks.

Carol