You doing the work and not letting the rest of us know the fix is really not helpful at all. This one person is certainly not the only one having a problem.
Step 1: Log into PHPMyadmin.
Step 2: Find and click on the the table connected to the site (go into conguration.php and see the table name under "public $db =").
Step 3: Within the table, find the field named 'TABLEPREFIX_extensions'.
Step 4. [Ctrl] + [F] to find 'Arabic'. Delete the named rows. In my case there were 3. 2 named 'Arabic' something, and one with Al-abjadiyah symbols.
Step 5: Find the field named 'TABLEPREFIX_languages'.
Step 6: Delete the row 'Arabic'.
Step 7: Go back into the site and delete cache.
Step 8: Go into the site and 'Check For Updates'.
You have removed 'Arabic'.