r260 open fail!!!what,s wrong!!

It looks like it might be a corrupt project. It's difficult to offer any more help from just this information - if you think there's a problem with Construct please file an issue following all the guidelines, as we need all that information to be able to help.

It looks like it might be a corrupt project. It's difficult to offer any more help from just this information - if you think there's a problem with Construct please file an issue following all the guidelines, as we need all that information to be able to help.

the project can open 251.2

Make sure, in r251.2, that your project is set to use C3 runtime (and that the addons you are using are supporting C3 runtime as well).

You can use the addon manager to remove and reinstall each addon, one by one.

Make sure to update your addons. Make sure to use only updated addons, or get in touch with their authors so they update their addons.

Make sure, in r251.2, that your project is set to use C3 runtime (and that the addons you are using are supporting C3 runtime as well).

You can use the addon manager to remove and reinstall each addon, one by one.

Make sure to update your addons. Make sure to use only updated addons, or get in touch with their authors so they update their addons.

no I have a very big projects.I will create a new project and add plug one by one and test it

I'm afraid this topic as well as your bug report are lacking informations to be properly investigated. Please go back to your report and fill in the required informations, otherwise it will just be closed without investigation.

For the record, I responded here. Please do try to follow the bug report guidelines otherwise all we have is guesswork.