We're aware of a problem using Google Drive cloud saves in Construct. This update aims to address the problem. We apologise for the inconvenience this has caused.
Please note: we have had to set up a new developer account for using Google Drive in Construct. Normally apps are verified by Google which they say could take several days. Therefore it's possible you will see warnings such as "unverified app" for a while when using Google Drive cloud saves in Construct. Hopefully verification will be completed soon and these warnings will disappear.
If you encounter any further problems with Google Drive, you can still access your project files by signing in to Google Drive on the web, downloading your project files, and continuing to work with them locally. Once you have finished, you can then upload your project files back to Google Drive with the web interface again.
In case you missed it, you can review what's new in r234 here. The release video is also included again above. For the record, we don't believe the Google Drive issue was actually related to the r234 update - the timing appears to be coincidental.