Call to undefined method FinanceData::updateAllExpenses()

Hello guys

We managed to setup the phpvms and a new template but once a day a problem ocures

when someone is gonna view our site he might get an error

Fatal error: Call to undefined method FinanceData::updateAllExpenses() in /home/dutchgl/domains/aviation-global-airways.com/public_html/core/bootstrap.inc.php on line 58

As a temporarly solution i found is to a have copy off core folder named copy_w then when the problem ocures i rename the core to core_b and core_w to core and then back again core to core_w and core_b to core and everything is working till the next day

I would apreciate if somebody has an advice for that problem.

Thanks in advance

What version are you on? Are you mixing and matching version?

Thanks for the quick answer first time

my version is Version 2.0.872

and to be honest the core copy is from my own test server so it could be that there is a version mixup but both of the phpvms settups are the same version

Yeah you’re mixing versions that won’t work at all, that’s why you would be getting errors

ok maybe a solution ?

I’m guessing a complete reinstall since you have mixing versions?

Yep