error checking in files

We are using the UML tool Enterprise Architect for our modeling work. This
lets us natively version control models we create using source safe and
CVS. However our standard is Subversion thus we are evaluating your plugin
as a way for us to do this using the source safe integration already
provided.

Having installed and configured your software it all seems to work fine
inside Enterprise Architect (I can view history, check out etc) except for
checking a file in which produces an error as follows:

svn: Commit failed (details follow):
svn: MKACTIVITY of '/src/EA/!svn/act/58c09ad3-da6f-1541-90a2-8fa808d1348c':
authorization failed (http://subversion)

and then:
Error: SCC_E_NONSPECIFICERROR

Admittedly this seems like a subversion problem, but I can commit fine if I
use the tortioseSVN tool so I don't believe this is the case. I realise
this may also be an issue with EA and this does not appear to be on your
list of IDEs, but if you can offer any assistance that would be good as we
cannot obviously purchase you plugin if we cannot get it to work on
something as critical as being able to check something in.

If it helps, EA can be downlaoded for a fully functional 30 day trial from
www.sparxsystems.com.au