I have also check all my keys in payment provider settings under payment methods in Tea Commerce Admin section, they are all there and valid

Can you send a screenshot of the keys you use? (remember to click the pencil to edit the key so we can see the actual key and not the human presentable key)

You can see the source code here:
https://bitbucket.org/teasolutions/tea-commerce-tea-commerce-payment-providers

Remember to look at the "1.x" branch. There must be a setting named wrong or missing.

Kind regards
Anders

Here are my keys, I dont know if i was able to pm you are not

Thanks

No spaces after the key in "x_login", "transactionKey" or "testing" or any of the others?

Kind regards
Anders

No spaces after the keys for all the keys, i also tried using "load standard settings" button again and enter in my keys but still same error, it works if I just commented out TeaCommerce.Base.GeneratePaymentForm()........

Try and download the source code for the payment provider project. Build it using Visual Studio and using Debug mode. Then add the pdb files - this should give you the line number of where the error happens and give an idea about what to fix :)

AND if you can - upgrade Tea Commerce to latest 1.x version.

Kind regards
Anders

Where can i get the source code? Looks like the latest is 1.4.5 is there any major changes between that and 1.4.2.3?

Source code is here:
https://bitbucket.org/teasolutions/tea-commerce-tea-commerce-payment-providers

Revision history is here:
http://documentation.teacommerce.net/revision-history/

Kind regards
Anders

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