PHP error with update to 2.7.5

Tried to update free version of plugin to latest and got this error:

Warning: call_user_func_array() [function.call-user-func-array]: First argument is expected to be a valid callback, ‘CMTooltipGlossaryFrontend::cmtt_reenable_parsing’ was given in /home/aeron328/drmiller.com/wp-includes/plugin.php on line 192

Would like to be able to revert back to an older version, but don’t see one in the list under “Developer.”

Had to deactivate the plugin to remove the error from showing at the top of the site:
http://drmiller.com/glossaryofterms/

Please provide previous version of plugin so I can revert.

Thanks.

Cat
http://CatsWebWeave.com

https://ww.wp.xz.cn/plugins/enhanced-tooltipglossary/