Hi @dougb
I’m sorry to hear about the issue. You are right, this can be caused by a corrupt workflow. This would probably be indicated by an error as seen in this forum post.
A possible quick fix would be to start KNIME Analytics Platform with the -clean parameter (or add it in the knime.ini in the installation folder).
If that does not help, you could check your logs with e.g.
grep incompatible <workspace-dir>/.metadata/.log
or manually check the last few entries. If you want, you can also share your logs and I’ll have a look at them.
As a workaround, I’d suggest copying roughly half of the workflows at a time over to a new workspace and see, if the program still launches (as in a binary search).
Kind regards
Marvin
PS. just incase this is a version specific problem, could you let me know which version of KNIME Analytics Platform you are using?