[SOLVED] Create a version --> bug on date validation

Dear Babynus,
Thank you very much for your genius software.
I find some small bug when (I use the new version 5.04) when I create a Version for a product, I select a date for ending date, which is around 3 week from entry service and there are bugs on planning column.

I check the log file and here is the report.
\projeqtor\view\objectDetail.php' at line (1093)
2015-08-17 16:45:29.489 ***** ERROR ***** cause = Undefined property: Version::$validatedEndDate
2015-08-17 16:46:00.166 ***** ERROR ***** ERROR *****

Please help me check with it.

Many thanks