I'm not at my fsx-pc now but i think to recall there are 2 in the left pane : cloud9 and flightbeam (this one not sure).
Ok, if this is the case, it seems more reasonable: you are missing all FSDT products, which seems to indicate the bglmanx_fsdt.dat file is missing/corrupted.
However, this will be downloaded automatically whenever you run any product installer so, the only explanation left, is that your local file has gone missing, and some problem with your internet connection (maybe a firewall ?) has blocked the download, so the file couldn't be restored.