Error on activate – The plugin does not have a valid header.

You clicked on Activate Plugin on the screen where the plugin was downloaded right?

Not sure if other users are having the same issue.

I repeated this twice.

The only thing is that the site is running on cpanel hosting with suExec, so there might be some issues with files permissions, however plugin works after activation from the plugins list so no idea what’s the problem.

This might be WordPress bug as well.

I got this as well. However manually activating it by going to the plugin list does work. Just not when you activate it right after the install

Same issue, same result as abda53. Activate in the plugin list didn’t throw the error.

Same issue.

Same issue, so [resolved] is incorrect.

I had the same issue, then tried installing a second time and it worked.

Found the culprit and fixed in trunk :-). It was an issue with SVN.