Hello
I have found when applying Blowery Http compression utility on DNN 4.3.4, the 'File Manager' is no longer available, due to a conflict of files within the bin folder.
An alternative solution, to enable Http compression on DNN 4.3.4, without loosing the file manager is a free module: Snapsis (PageBlaster), available here:
http://www.snapsis.com/pageBlaster.aspx
I have tried this with DNN 4.3.4 and I have retained my File Manager.
Lynn