Dear developers. Unfortunately, it is not possible to save the STEP file, the application crashes all the time(file size is about 70 mb). Perhaps there are some special conditions and criteria for saving this format ??
We’ve seen this issue in some cases, and have a fix ready for it soon, it will be included in the next release. Sorry for the inconvenience!
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We’ve just released the update with the fix 
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Great, I’ve checked. Everything good.
Thank you
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