Warning: fopen Warning: fread() /Warning: fclose()

I installed the membership plugin. The widget shows up on wordpress theme, but i get Waring message copy bellow.

mu-plugins path "mu-plugins" ( that did not work)
I deactivated, deleted and uploaded the plugin file (membershipincludesdirectly, membership.php) in new path: "plugin" (I get same warning message)

note:
When I 1st installed the free membership lite plugin "that worked fine!
I deactivate the FREE one and deleted it.. and than installed the premium that I purchased, but I get warnings error:

Warning: fopen(/home1/mariovfx/public_html/lebanonrealstate/wp-content/plugins/membership/membership.php) [function.fopen]: failed to open stream: No such file or directory in /home1/mariovfx/public_html/lebanonrealstate/wp-includes/functions.php on line 4165

Warning: fread(): supplied argument is not a valid stream resource in /home1/mariovfx/public_html/lebanonrealstate/wp-includes/functions.php on line 4168

Warning: fclose(): supplied argument is not a valid stream resource in /home1/mariovfx/public_html/lebanonrealstate/wp-includes/functions.php on line 4171
The membership plugin version is Enabled

Member counts

User counts
Total Users 3
Deactivated Users