Array error after upgrading to 5.2.1 from 5.1.3

[filetobackup]

i just upgrade to the latest 5.2.1 and am having a issue now i use the

livedrive addon

https://www.whmcs.com/appstore/301/Livedrive-Backup-Module.html

purchase here and after the upgrade when someone trys to sign up it says "Array" in red.

 

if i remove the Validation

 

for e-mail /\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*/

 

and for password

/^[a-z0-9!@#$%^&*d_]{6,28}$/i

 

which is located under Products/Services / edit product /custom field/ validation

 

it does work and create an account but the customer could type in a e-mail like 123123.cox.net and it would allow it, what is the correct Regular Expression Validation String for these two items? or is it correct?

Thanks for all your help