A problem solved...
I used Akeeba to back up my system and restore it to a live web environment from a local test situation. The table jos_comprofiler_fields has a large number of entries that have been converted to jos_ when they should be #_. The CB database checker gives errors to the effect that this is not working.
Error message is:
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Table akb_comprofiler_fields Column table DEFAULT is 'jos_comprofiler' instead of akb_comprofiler
Table akb_comprofiler_fields Rows fieldid = 41 : Field table = jos_users instead of 'akb_users'
Table akb_comprofiler_fields Rows fieldid = 26 : Field table = jos_comprofiler instead of 'akb_comprofiler'
Table akb_comprofiler_fields Rows fieldid = 25 : Field table = jos_comprofiler instead of 'akb_comprofiler'
Table akb_comprofiler_fields Rows fieldid = 27 : Field table = jos_users instead of 'akb_users'
Table akb_comprofiler_fields Rows fieldid = 28 : Field table = jos_users instead of 'akb_users'
Table akb_comprofiler_fields Rows fieldid = 29 : Field table = jos_comprofiler instead of 'akb_comprofiler'
Table akb_comprofiler_fields Rows fieldid = 42 : Field table = jos_users instead of 'akb_users'
Table akb_comprofiler_fields Rows fieldid = 45 : Field table = jos_comprofiler instead of 'akb_comprofiler'
Table akb_comprofiler_fields Rows fieldid = 46 : Field table = jos_comprofiler instead of 'akb_comprofiler'
Table akb_comprofiler_fields Rows fieldid = 47 : Field table = jos_comprofiler instead of 'akb_comprofiler'
Table akb_comprofiler_fields Rows fieldid = 48 : Field table = jos_comprofiler instead of 'akb_comprofiler'
Table akb_comprofiler_fields Rows fieldid = 49 : Field table = jos_comprofiler instead of 'akb_comprofiler'
Table akb_comprofiler_fields Rows fieldid = 50 : Field table = jos_users instead of 'akb_users'
Table akb_comprofiler_fields Rows fieldid = 51 : Field table = jos_users instead of 'akb_users'
Table akb_comprofiler_fields Rows fieldid = 52 : Field table = jos_users instead of 'akb_users'
Table akb_comprofiler_fields Rows fieldid = 24 : Field table = jos_comprofiler instead of 'akb_comprofiler'
Table akb_comprofiler_fields Rows fieldid = 23 : Field table = jos_comprofiler instead of 'akb_comprofiler'
Table akb_comprofiler_fields Rows fieldid = 22 : Field table = jos_comprofiler instead of 'akb_comprofiler'
Table akb_comprofiler_fields Rows fieldid = 21 : Field table = jos_comprofiler instead of 'akb_comprofiler'
Table akb_comprofiler_fields Rows fieldid = 20 : Field table = jos_comprofiler instead of 'akb_comprofiler'
Table akb_comprofiler_fields Rows fieldid = 19 : Field table = jos_comprofiler instead of 'akb_comprofiler'
Table akb_comprofiler_fields Rows fieldid = 18 : Field table = jos_comprofiler instead of 'akb_comprofiler'
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The solution is to take a copy of the working local system and replace the table with the correct one by deleting the old one using PHPmyAdmin...
Checking everything seems to give a positive result with all of the errors having been fixed.
The reason that I created a local test system was because of this precise problem and I wanted to make a step by step clean install with no errors. The errors came back and luckily I have now tracked them down to Akeeba not functioning correctly.
I think this is a clear example of a bug in your system. My I suggest you urgently fix it for you users that have CB installations. Given that I fixed it for you already, it would be very nice for you to send me some freebies e.g., free software or support contract for free??? ;-)
Contact me for more data...
Andi