I took up on the suggestion by BOINC itself to upgrade to a newer version (V5.4.9). The messages tab now shows that the project that I had been running for several weeks now (8.5% complete / up to \"1934\") has been deleted! No indication that the results so far had been even uploaded. I now have a fresh project, whereas I did NOT want to cancel the one I was working on as I wanted to complete it.
I have left my PC running during the evenings in order to help the climate predictions, however now that I am back at ground zero, all I have accomplished to date is contribute more to global warming this way. What a failure and a waste of electricity this project is turning out to be!

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It would seem that you were running the special BBC version of BOINC, which stores it\'s programs and data in a different location to the \"normal\" versions.
All of this is still there, waiting for you to come back to it, so all you need to do is Uninstall the new version, and re-install the BBC version.

Or, I think that it may be possible to use the new version by Uninstalling it, and then, when you re-install it, specify the correct folder location.

Uninstall both versions. Copy the files in the BBC versions folder to the standard BOINC folder c:\\program files\\boinc then reinstall the standard version.

This should get your previous model back, upgrade to the latest version and allow you to attach to other BOINC projects as well.

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BOINC WIKI

BOINCing since 2002/12/8