Seems to me that something isn't going to well with the 5.08 version.
I installed it yesterday and after that, almost every right mouseclick gave an error and made XP shut down all programs back to the desktop.
System Restore didn't restore the older Winamp back, so I had to delete it, search the registry and deleted any reference to Winamp in general, and put the older version back on.
Now everything is working fine again

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Have a nice day