error message in IE7 when attempting to access plug-in repository

When using IE7 to access the plugins repository from the administration console I receive a popup-dialog box warning with exlamation point graphic that says "[object error]". Click OK and it continues to attempt to load the repository. If I try to navigate away via a link I get the following warning message in a dialog box "Please wait until current action completes processing". The only way to navigate away is the back button or kill IE. I have been able to produce this issue at home and on a work computer.