If I try to open my last build, I get a command that says 'Project saved with future release of C3' - I am not using any beta stuff. But even if I enable Beta build, it says it can not open the file. Can anyone elaborate what is going on?
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As indicated in Where to report bugs and suggestions
Please make bug reports on github.com/Scirra/Construct-3-bugs/issues
following the provided guidelines.