This release does not include any actual functional changes or fixes but it does fix a bug in the database upgrade scripts for upgrading to or past version 4.402 which would prevent the upgrade from completing and would mean c9 could not run.

If you are already running version 4.402 or later then this upgrade will do nothing for you.  If you have not yet upgraded v4.402 this update may affect you.  4.402 was a very complex update, probably the most complex to date where it reorganises customer account records to better separate debtor and depositor trial balances.    If there is any erroneous transaction records in the database which are dated before 1800 then the upgrade fails. This version of c9 deals with this possible situation.  Generally there should not be bad dates in c9 database like this and I am not aware of any way such data can get into latest version of c9 as c9 will not let yet input a date before 1800, though I have now seen it a couple of times now where there are dates in the database prior to 1800. To investigate further.  Possibly, most likely, database migration error from initial upgrade from c8 to c9 or when migrating data from non c9 systems for dealers switching to c9.

Based on analysis of online backup files (which most c9 users now subscribe to) I expect that this bug has and will only affect one c9 customer who we have helped fixed manually already.  This version has been created anyway for completeness and just in case, although unlikely, there is another c9 dealer out there who does not subscribe to online backup service who also may have bad dates in their transaction records.