Error when clicking paypal plugin in VM 2.9.8

[moginn]

When I go to Extensions > Plugin manager > VM Payment - PayPal an error appears:

Warning: require(JPATH_VM_ADMINISTRATOR/helpers/shopfunctions.php): failed to open stream: No such file or directory in /home/u162555278/public_html/plugins/vmpayment/paypal/paypal/fields/paypalcreditcards.php on line 25 Warning: require(JPATH_VM_ADMINISTRATOR/helpers/shopfunctions.php): failed to open stream: No such file or directory in /home/u162555278/public_html/plugins/vmpayment/paypal/paypal/fields/paypalcreditcards.php on line 25 Fatal error: require(): Failed opening required 'JPATH_VM_ADMINISTRATOR/helpers/shopfunctions.php' (include_path='.:/usr/lib/php') in /home/u162555278/public_html/plugins/vmpayment/paypal/paypal/fields/paypalcreditcards.php on line 25

[GJC Web Design]

Test with 2.9.9a  (http://dev.virtuemart.net/projects/virtuemart/files)

2.9.8 is "old" now