Plugin could not be activated because it triggered a fatal error.

hi,

i just installed membership 2 pro and tried to network activate. The following message came up:::

[

Plugin could not be activated because it triggered a fatal error.

Fatal error: Class ‘TheLib_2_0_3_Core’ not found in /home3/xyzd2/public_html/domainname.com/wp-content/plugins/membership/lib/wpmu-lib/core.php on line 68

]