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When I attempt to install Grooveshark Remote Control 0.3.1 by clicking on the "Add to Firefox" button on the page below, I receive this error:

Grooveshark Remote Control could not be installed because Firefox cannot modify the needed file.

I am using XP Home SP 3 and Firefox 4.0.1.

Any way to get this extension installed and working correctly?

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Are you local admin? Or do you have a restricted account on this machine? – Neito Jun 18 '11 at 14:09
I am the only user of the machine, so should not have any restricted access. I don't have problems installing Firefox extensions otherwise. – Goto10 Jun 19 '11 at 11:37
I've tried the new version - 0.3.2 with Firefox 5 also, but still get the same error message. – Goto10 Jun 22 '11 at 16:58

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