# Knime AP won't launch, corrupt files in workspace?

**URL:** <https://forum.knime.com/t/knime-ap-wont-launch-corrupt-files-in-workspace/32774>\
**Category:** KNIME Analytics Platform\
**Created:** [May 6, 2021, 7:02pm UTC](https://forum.knime.com/t/knime-ap-wont-launch-corrupt-files-in-workspace/32774 "2021-05-06T19:02:25Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![marvin\_kickuth](https://forum-cdn.knime.com/user_avatar/forum.knime.com/marvin_kickuth/32/24811_2.png) [@marvin\_kickuth](https://forum.knime.com/u/marvin_kickuth)\
**Post date:** [May 10, 2021, 8:02am UTC](https://forum.knime.com/t/knime-ap-wont-launch-corrupt-files-in-workspace/32774/2 "2021-05-10T08:02:02Z")

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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](https://forum.knime.com/t/not-able-to-open-knime/32667).

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?

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