I cannot upgrade my licensed copy of ReSharper 5 C# edition to ReSharper 6 C# edition.
I go through the process of selecting the upgrade at a cost of US$89, plug in my license key, and then am presented with a screen that tells me my shopping cart is empty with suggestions that include purchasing the older ReSharper 5 edition at full price.
At no point in the upgrade process am I told that my current license key is incomplete or invalid, so I assume it is valid like it always has been.
I've attempted the upgrade process using IE9 (with and without add-ons disabled), Firefox 5 and Safari 5 and none of them work.
I'm dead in the water and cannot use ReSharper at all.
Your upgrade process is broken. Fix it. Soon.