I have been having similar issues. I have been running Cura on my Windows 7 64-bit Laptop that I do my design work on. Shortly after upgrading to Cura 2.7, when I launched Cura I would get a message to the effect “Cura has stop running” and then Windows would offer to close the window. I reloaded Cura 2.7 and it work for a day or so. I then loaded Cura 3.0.3, and it would never start on the Laptop. I then loaded Cura 3.0.3 on our Windows 10 Desktop where it seems to be working.
I am not sure but I think the problem started after a Microsoft Windows update.
UPDATE:
Reloaded 3.0.3 last night on my laptop, I was going to try a fix pointed out in one of the above mentioned threads, but this time it worked with out doing anything.
Edited by Guest
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HappyTinfoilCat 1
Yes, several people have this issue. I can run 2.7.8 but 3.0.3 just blinks on the screen for a moment. I run Windows7-64bit as well. Deleting the directory doesn't fix it.
See here: https://ultimaker.com/en/community/51597-cura-270-and-303-doesnt-start
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