Cubse VST5.1 will not load after installing LE5

My PC has the printer port for the VST5 dongle, which worked fine, until installing Cubase LE5 and the elicense software. Now the dongle is not recognized. I uninstalled LE5 and reinstalled VST5, and it copied the necessary files back for the license. But after installing LE5, I cannot run CubaseVSt. Is there a work around?