USB POrt unaccessible

I have today a problem which is that I cannot plug my printer to the USB port of my MacPro. It says "USB device you are trying to connect to the virtual machine is being used by another application. Close that application or unplug the device and plug it again..."
But I took the precaution when plugging in OS my USB memory key to unplug it through the command "eject" and it still does not work. I tried another USB port with no success.

Can someone help me solving this problem?

Thanks in advance

 

Hello Dormoy
What build of parallels are you running?
Did you upgrade your MacOS recently?

 

Yes I recently upgraed Mac OS and I have the version 10.4.10
My Parallels Build is 3188

 

You have to update Parallels Desktop to build 3214
go to Help->Check for updates

 

Check for updates?

How do you get the "check for updates" feature to work? I've had it running for 20 minutes, now, and there has been no response. Is there any other way to download this build? I note it's not available on VersionTracker. Thanks!

 

Thanks for the advice. I did it and it worked.

 

3214 link:
http://download.parallels.com/GA/Parallels Desktop 3214 Mac en.dmg