4.5.2 DMG seems to be corrupt
Downloaded the 4.5.2 version soapUI-4.5.2.dmg and it seems to be broken somehow. Finder can not open it. Just FYI. I'm trying 4.5.1 to see if it's less broken.
Forum Discussion
I installed soapUI-4.5.2.dmg today on MacBook Pro OSX (10.8.3) and didn't have a problem.