Tried numerous times to install Digital Editions on my iMac (running OSX 10.7.2). Each time wind up with just a black window. No Set Up Assistant display shows. Complete uninstalls including any supplemental files, emptying trash, repairing permissions, restarting, all yield same results. Adobe does not deal with this issue, just recommends uninstalls and reinstallations. Gone that route over and over. Any help out there on this problem? Anyone know if any particular 3rd party (or Apple app) could be interfering with the installation? Any help would be appreciated.