The same problem occured for me.
I have downloaded the trial version of Your components to test it as I need a web-based filemanager, but I still did not buy it
(and I do not know whether my client will allow that) -so I do not expect fast or any response at all, this is just for helping You in development.
fileExplorer control does not display its grid. To be really exact, it flashes as it loads for a fraction of a second then it is not visible
(not even its headers.)
In IE7 it is OK.
Browsers with problem:
IE8, Firefox 3.0.8, Chrome 22.214.171.124.
In IE8 setting meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7" or "IE=7" on a per page basis fixes the problem.
Thank You and best regards,