The Adobe Creative Suite SDK Team confirmed that there is a bug in Adobe Extension Manager CS5 and CS5.5 that prevented extensions from being installed on Mac OS 10.7. (Adobe: Creative Suite SDK Team Web page). This affects the installation of Geographic Imager for Adobe Photoshop CS5 and CS5.5 on Mac 10.7. This does not affect Windows users.
After the Geographic Imager installer is complete, start Adobe Photoshop. The extension "Geographic Imager" is not available from Window > Extensions. As a result, Geographic Imager Main panel will not be available.
Currently, our development team is working on this issue. Also, Adobe announced that the fix for this issue will ne available in the next two weeks through Adobe Update Manager. Meanwhile, below is a temporary solution provided by Adobe team for developers and end users.