I also cannot open files using fileopen.
I installed acrobat reader 11.0.01 and installed fileopen using the fileopen installer. The fileopen installer says installation completed successfully. When I open a file locked using fileopen, it just brings me back to safari asking me to install fileopen again. When I click on the test pdf on the fileopen site, it comes up blank.
I'm going to try to install reader v10 to see if it makes a difference.
However I'm all ears for a solution or just anything to try!
good news... I just uninstalled acrobat reader 11.0.01 and installed 10.1.4 from here
and I was able to open the fileopen docs I had.
hope this works for you too
We also have a plug-in for Reader XI in beta. This can be downloaded as follows:
(OSX 10.5 or lower) http://plugin.fileopen.com/new/current/FileOpenInstaller.dmg
(OSX 10.6 or higher) http://plugin.fileopen.com/new/current/FileOpenInstaller-B926.zip
All the best,