[DotGNU]Compile-error

[Pascal Hauser]

Sorry.. but I am quite new at this project.. 

I have compiled a class as a shared library (.dll) with cscc.. that
worked..
But then when I tried to compile a class that uses that library.. I got
the following error:

1 token 0x0A00001C: member
'System.Text.RegularExpressions.GroupCollection.get_Item' not found
2 my.dll: unresolved external references

Please tell me where the error is. Is it in cscc, RegEx C# Library or in
the ExecutionEnvironement? Where can I find Developer
Documentation/Information? I searched.. but its not easy to find.. :)

When I tried to ILRun the executable compiled with the MS Compiler I got
the following error:

1 metadata error: index is missing or an obsolete version
2 setitest.exe: invalid metadata in image


thanks..

Pascal