okay this is getting extremely tedious

After telnet'ING through putty several times a week and resetting the files and folders with the, "chmod -R 777 /mnt/HD_a2/BT" command I have now lost this option as well, or some inexplicable reason?
Can anybody tell me how to escalate this issue here in this forum or directly to dlink?
incidentally I have also seen this issue reported with other manufacturers NAS, Windows 7 being the common denominator! in those threads a workaround of turning off "thumbnail caching" and logging off and on again was recommended but alas it has no effect.
I'm extremely reluctant to break the raid and reformat the drive's with the latest & current firmware in situ, which I'm using, if this issue is going to reappear like it has done months down the line previously.
How are you other guys getting along, any help appreciated.