Failed to open project. Check it is a valid Construct 3 single-file (.c3p) project.

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- AthleticDesign
- - Joined 20 Mar, 2017
  - 9 topics • 24 posts
- 1
- 8 Aug, 2021
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Suddenly I cannot open several .c3p files. I get the error message "Failed to open project. Check it is a valid Construct 3 single-file (.c3p) project.

Chrome console says: "[Project] Exception opening: Error: cannot find event variable 'dx'

dx is local variable that I use in many places.

I do not use any 3rd party addons.

Should I write a bug report or can I mail Ashley the .c3p?
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- Maverick1912
- - Joined 13 Nov, 2014
  - 28 topics • 902 posts
- 1
- 9 Aug, 2021
- Quote
Try to download it and extract to folder.

Then open project folder in c3 and choose your folder location.

Maybe there is a corruption when saving to c3p.
- AthleticDesign
- - Joined 20 Mar, 2017
  - 9 topics • 24 posts
- 1
- 9 Aug, 2021
- Quote
Thanks. Sorry, I have tried that.

It was saved in R251.2 and I have updated Chrome since the c3p save. However, an older c3p version that I saved four days earlier loads without problem. I have added a couple of offical addons since that version though.
- AthleticDesign
- - Joined 20 Mar, 2017
  - 9 topics • 24 posts
- 1
- 9 Aug, 2021
- Quote
I should add that I have saved several c3p files since the last working one (from August 5) but they all report the same error about "event variable 'dx'". They appear perfectly normal regarding size (about 4 MB) and in unpacked structure.