Error upgrade CA to smart 7.5.6

Hello Catalino,
Based on the log file, it looks like the data folder is either missing or corrupted. Ideally SMART is supposed to revert back to the original data in this case, but if the first error happened due to lack of disk space that might be impossible.

The recommended solution is to start over. Unzip SMART7, restore your SMART6 backup, but make sure you have enough disk space.