Some users reporting purchased apps missing from Google Play. - HTC Source
Have you looked in your Google Play Market and noticed that some apps you have purchased are now missing? According to this thread on the XDA-Developers forums, there are many users experiencing this issue. There are also some users they get an error message when they to access an app they have already purchased.
Google is aware of this and according to their support page, they are currently researching the issue. It’s interesting to note that this specific issue shows up under the ‘Recently Fixed’ section instead of the ‘Known Issues’ section. However, the users over in the XDA forums still don’t indicate that the issue has been resolved.
Are you missing any of your purchased apps? Let us know if you are affected by this issue.