Installed latest update 27. September 2019, 
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## Description
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Provide a detailed description of the behavior you're seeing or the behavior you'd like to see **below** this comment.
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## Version
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latest Version
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* Kactus:

* Operating system:
MAC OS 10.14.6

## Steps to Reproduce
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1. `step 1`try to open kactus
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### Expected Behavior
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I expected that kactus normally opens

### Actual Behavior
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I just get a blanc screen...
<img width="1348" alt="Bildschirmfoto 2019-09-27 um 13 00 50" src="https://user-images.githubusercontent.com/55880422/65766744-29f14880-e12c-11e9-9fd2-8324a4b590ea.png">


## Additional Information
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### Logs
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