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Stream versioning changed incompatibly for web settings from ffj20 to dev, meaning that if you run ffj20 with some user dir, then start a dev build (observed with sources as of mar 2 '01) with the same user dir, an exception is thrown. The serialVersionUID should be made to match what is was long ago. Clearly if it cannot match that of all past settings, the most recent release should be chosen (nb 3.1 I guess).
Created attachment 711 [details] Object stream exception from web module when restoring old project
Version: 'Dev' -> 3.2
See also issue #9711 which may be duplicate (but has one more broken class in it than this one does). This one affects ServletSettings BTW and is also observed from release31 to present.
Made compatible with NB3.1 (applied to dev, NB32, pilsen)
Target milestone -> 3.2
Resolved for 3.4.x or earlier, no new info since then -> closing.