FreeRapid version: 0.85u1
fileserve premium plugin version: 1.0.6

Any download will report the following error message:
ERROR - Error starting download, account not premium?

Log in app.log:
Mar 9, 2011 8:37:52 PM cz.vity.freerapid.plugins.webclient.DefaultFileStreamRecognizer isStream
WARNING: Suspicious Content-Type: text/html
Mar 9, 2011 8:37:52 PM cz.vity.freerapid.plugins.webclient.DownloadClient processFileForDownload
WARNING: No Content-Disposition (filename) header in file
Mar 9, 2011 8:37:52 PM cz.vity.freerapid.plugins.webclient.DownloadClient processFileForDownload
WARNING: Loading file failed

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I can log into the web site to start a download with my account.
BTW, the ordinary fileserve plugin seems working fine...

Same problem here, free user...

I'm having same problem.

you are using the premium account, switch to free user version from the plugin list