I also can't get the a.net module to process, I get confirmation emails that test transactions process but both SIM & AIM modules report
"Please try again and if problems persist, please try another payment method."
This has been consistent with different versions of authorizenet_cc_aim.php & authorizenet_cc_sim.php I don't redirected to the success page.
I'm changing my processing from ECHO and am wondering if something in my a.net settings is wrong.
Anyone have any ideas, nothing I've found so far is working.
I did notice that authorizenet_cc_aim was being returned in the error field, but changing the 'if' statement to filter that out hasn't fixed the problem.