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Steps: 1. have a (mri) ruby installation with an old version of rubygems (1.1.1 in my case) 2. open the gem manager => a warning is correctly displayed: "old version detected 1.1.1" 3. update rubygems from the command line to the latest version (1.2.0). gem -v from the command line shows 1.2.0 4. reload gems => the warning is still displayed, claiming the version to be 1.1.1 still 5. restart the IDE => the same warning is still displayd Only deleting the userdir seems to help.
Thanks for the catch. Try to look at it into 6.5.
The root cause is basically the same as in #182168, i.e. caching of platform info. Removing and re-adding the platform should help as a workaround. *** This bug has been marked as a duplicate of bug 182168 ***