I bought ProMass for Xcalibur years ago and I need to re-activate my copy/lost my copy/lost my computer/moved computers/etc…

Unfortunately, ProMass 2.x for Xcalibur is no longer supported, as the last release of ProMass 2.x for Xcalibur was in 2012. A new license for ProMass will need to be purchased. You can download a quote here, or submit your purchase order here. Versions of ProMass for Xcalibur 3.0 or later that included the USB license key are fully upgradeable to the latest version.