I got a questionabout install 1.5.3d in zen-cart 1.54 .I'm a little confused as to what I may have done wrong about install

I was running 1.3.8a before with this module, no problems

I then upgraded my store to 1.5.4.only thing that was carried over from the old installation was the old testimonial database tables.......all php files are the new versions for 1.5.

I get the following security message:

"WARNING: An Error occurred, please refresh the page and try again."
When I remove all the files of TM, that error goes away but the module is not auto-installed.

Any idea what I could do in order to fix this problem?

I got the Debug log here:

[03-Feb-2015 03:44:51 America/New_York] PHP Fatal error: 1062: Duplicate entry 'DEFINE_TESTIMONIAL_STATUS' for key 'unq_config_key_zen' :: INSERT INTO zen_configuration (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, last_modified, date_added, use_function, set_function) VALUES ('Define Testimonial Status', 'DEFINE_TESTIMONIAL_STATUS', '1', 'Enable the Defined Testimonial Link/Text?<br />0= Link ON, Define Text OFF<br />1= Link ON, Define Text ON<br />2= Link OFF, Define Text ON<br />3= Link OFF, Define Text OFF', '42', 20, NULL, now(), NULL, 'zen_cfg_select_option(array(''0'', ''1'', ''2'', ''3''),') ==> (as called by) /home/playscom/public_html/demo/admin/includes/init_includes/init_tm_config.php on line 121 <== in /home/playscom/public_html/demo/includes/classes/db/mysql/query_factory.php on line 155


Thank you