Can't open cp3 files from 2020,2021,2022

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Blackmid

  • I have many files cp3 files from a few years ago that I can no longer open. When I attempt to load the file, C3 starts loading with a percent, and the the message "Failed to open project. Check it is a valid Construct 3 single-file (.c3p) project" comes up.

    This is very concerning.

  • Press F12 and check console log.

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  • Most such recent cases are due to the issue described here. You can also try opening the projects in the latest beta release where we've done some further work to mitigate this, including trying to automatically resolve problems, or at least show a better error message.

  • I loaded the older C3 version and successfully opened the file. Then I checked my file names. I did have a few with spaces and one with a "!". However, the saved cp3 file still won't open in the latest release. I also tried the latest Beta with the same result.

    In the project bar, I did a search for spaces and special characters (such as %$#) and got nothing, so everything looks like there's no naming rules being broken.

    Also, I saved it in a project folder and looked at all the image names and noticed that many had animation names as "Animation 1", so I changed those to "default", however still the same result.

    Is there anything else I can try?

  • Check the browser log. It may mention the object or file with an invalid name.

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