Blank page return authorize.net

[DaDoctor]

Hi there,

I have been searching restless to find a solution for this and I still can't.  Was hoping I can get pointed in the right direction.
When selecting the Authorize.net payment method then clicking check out now, I get a blank page.
During my search I seen that some folks fixed it by increasing the max_execution_time php variable.

My php.ini has those values:
memory_limit = 128M
max_execution_time = 300

When I enable debugging I get the following:
Fatal error: Class 'vmCrypt' not found in /xxxxxx/html/plugins/vmpayment/authorizenet/authorizenet.php on line 328

Using Joomla 3.4.8 and VirtueMart 3.0.12

[GJC Web Design]

Is your VM AOI up to date as well?
Is your safe path correctly set?

[DaDoctor]

Updating AIO did the trick!
Many thanks GJC.