Hi Ivan,
Thanks for your answer.
Eclipse didn't present me with a dialogue box to accept untrusted/unsiged content as it usually does.
When I install the GWT Eclipse plugin and untick the SDBG box, then the install goes through and eclipse ask me to accept untrusted/unsiged content as usual.
The error seems to only occur when I try to install the SDBG plugin. The file that is refered to in the error message exists on my filesystem.
I tried a couple of fresh eclipse install (from mirrors and main) but with the same error result.
Do you have any suggestions ?
Thomas