Hi @default327388489r8q7p Are you still receiving the error? Would it be possible to share a screenshot of the error? Typically, this means that the licensing for an asset used in the file has changed and needs to be removed and updated. Please open the file and layers for the file in question, check for any blank layers (including audio tracks if this is a video project), and delete them. After deleting the blank layers, you should no longer receive this error. Sometimes, you'll see a red triangle with a white exclamation mark denoting whatever asset is causing the issue, and clicking on it will select it in order to identify it, although I've seen cases where it wasn't apparent which asset was causing the issue.
Hope this helps,
Dave
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