Rycher

So I think I figured out what happened, for some reason the new install had no .htaccess file written into it, when I added a fresh .htaccsess file all worked well.
Sois the security plugin in my rootfolder not allowing the new .htaccess file to be written in?
So far your plugin seems solid, thanks for all your hard work!

No thank you, sir for all your help! And yes, I will keep you up to date on the progress with the conflict resolution with the other plugin.

Thank you! It turns out the issue was not at all with BPS, as you pointed out. Sorry for the false alarm, I just assumed this would be a good place to start troubleshooting, since the wp_options DB info I was receiving had the BPS info all over it.
Great plug-in keep up the great work!

Silly me, should have read the code you put up before I posted.
When I remove the function from the file I get a site wide error:

call_user_func_array() [function.call-user-func-array]: First argument is expected to be a valid callback, 'filter' was given in /home/nyprepp/public_html/wp-includes/plugin.php

Jeremy, once again thank you so much for your reply! I have not heard back from the writer of the Online Store plug in as of yet, but I am hopeful.
As for removing the function as you stated above, would I write this piece of code directly to the core.php file in the plug in folder in place of the old line #207?

Looked for empty space on core.php beginning and end, all looks fine.
Looked for empty space on general.php, found no closing ?> tag at all, added it, same error.

Thanks for the reply Jeremy, I appreciate it.
Tried deleting the plugin completely and re-installing it, same error, but the article you referred me to was insightful, I can’t see the error in the file.
The error that I get looks like this:
Warning: Cannot modify header information – headers already sent by (output started at wp-content/plugins/wp-online-store/core.php:207) in wp-content/plugins/wp-online-store/includes/functions/general.php on line 89
Which I now know is apparently an error on line # 207 of the core.php file, thanks to the article you linked me to.
Line #207 in the core.php file looks like this:
if('' == $content || !strstr($content, '[WP_online_store]') ) { ob_flush();return $content; }
I know I am probably missing something silly, but I don’t see an error. If I de-activate Jetpack, bam! the store works like a charm, activate jetpack and as soon as I try to add something to the cart, the error reoccurs.
Any thoughts?