The LN52A750 only supports a few formats, which are listed out in the manuals. It is unlikely that further formats will be supported in the television. Unless the formats you're using are listed in the manual have video, audio codec and resolution, you will get the "Not Supported File Format" error. Re-encoding the files as listed in the manual will help.
The PC Share Manager software for your model is available here for download (Click on Software under the "Downloads" tab).
PC Share Manager 1.5.2 is the latest version available for your model. Newer versions exist out there, but those are for current models, which support more formats.
I noticed that there is a firmware 1017 for other models. Is this a potential upgrade from firmware 1012 for the LN52A750? Or is the LN52A750 considered a legacy product that will get no more updating of things such as firmware and PC Share Manager?
I am runnimg Windows 7 Home Premium with all updates applied.
I have so many problems with things like "Not Supported File Format" and others that I don't know whether to give up or hope for help from Samsung. I am unable to upgrade the "PC Share Manager" software because I am unable to uninstall the software that I loaded from the CD packed with the TV.
I have submitted several emails asking for help listing my problems with no response from Samsung. I also tried live chat and could not get any help that way. Where do I go from here?
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