"An Ajax HTTP error ocurred"? [#1981272]

I´ve just installed this module and I get this error:

An Ajax HTTP error ocurred
HTTP Result Code: 200
Debugging information follows.
Path: /system/ajax
Status Text:OK
Response Text:

Where it appears:
The user goes to the checkout page, where he has to fill in the form with some personal information (in there he has to complete the billing address, etc).
The first field is the email.
After completing the email and when trying to get to the next field, ajax starts, and a pop up error window appear (with the error posted above).
It doesn´t matter if the email belongs to a registered user or not. The error is the same in both cases.

I´ve set this as a normal priority bug, but the truth is that this error prevents the use of the module entirely.

Thanks for your help!

Comments

Comment #1

Rosamunda CreditAttribution: Rosamunda commented 27 April 2013 at 18:55

UPDATE: After enabling and disabling modules in search for a conflict, I´ve found that it conflicts with Commerce Profile2 Checkout Pane.
I´ve opened an issue there, but I´ve updated the issue here two, is there any way for these modules to work together?
Thanks!

Comment #2

pwsherman CreditAttribution: pwsherman commented 10 December 2013 at 02:38

Users attempting to log in using Mac OSX Safari (Firefox OK) are unable to proceed. The form appears to be looping an Ajax call. Attempts to stop the process result in terminal Ajax error:

An AJAX HTTP request terminated abnormally.
Debugging information follows.
Path: /system/ajax
StatusText: error
ResponseText:
ReadyState: 0

Not using Commerce Profile2 Checkout Pane.