well this is what I did.
Both on my laptop and PC, CB was at 1775. I svn updated both systems and started building (to 1813).
PC :
1) CB itself
2) -> N) : for every contrib plug-in : load it's cbp and build, unload
N + 1) update.bat --> no problems at all -> this is the nightly build
Laptop :
I have a workspace which consists out of CB project, and the projects of all contrib plug-ins :
1) rebuild workspace
2) update.bat --> start CB, CB claimed copystrings plug-in was using old version of SDK, tried to rebuild the copystringsd project --> same errors as others have with plug-ins.
3) AGAIN update.bat -> could build copystrings plug-in
I have seen this also in the past, that when building from 'this' workspace, such error might happen. No idea why. Normally also on the PC I use such a workspace as on my laptop, but not today : I still need to update it because of the name changes of the cbp's.
[EDIT] I just realised something, all this is correct but then again also not to the point, this build is done (off course) with CB rev 1775 , tsss , stupid me
[EDIT2] : just tried to rebuild for example devpak plug-in with my rev 1813 -> ok