TTN 5 wont load

Used TTN 5 this morning and worked fine, started up to go home clicked on red hand and TTN started to load and a small hand appeared by the bluetooth symbol but the programme never loaded. Tried a reboot but still does not work, tried reinstall, still does the same. Any one got an idea why. Using HP 5500, all files appear to still be on the SD card 256Mb, just get legal notice after a reboot followed by no maps found.
Please help, anyone.
Dave

I had the same problem,what i found to explore the SD card via file explorer,go to 2577-then u have 4 things:run them all,and ur maps should hopefully reappears-real pain when it happens