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If you have a user directory from ffj20 (for example) and try to load it in a dev build (e.g. mar 2 '01), you get an OptionalDataException. Apparently something in the externalization form of DataLoader changed and the old versions are not read in correctly.
Created attachment 712 [details] OptionalDataException from externalizedModules restore
Version: 'Dev' -> 3.2
Fixed. Fix will be in dev build #151 and release32 build #10
[3.2 #11]
Target milestone -> 3.2
Resolved for 3.4.x or earlier, no new info since then -> closing.