Cannot upgrade from Ubercart 7.x-3.0 to 7.x-3.1

Please follow the steps at http://drupal.org/node/158043 which will either lead you directly to the problem or at least show you an error message, which you can paste here if you need further help.

This can be fixed by following the above steps, if you need more help please reopen.

Same here with drupal 7.15 and latest stable version of ubercart

Quick fix:
Add this line before returning in uc_coupon_theme_uc_cart_block_content() function in uc_coupon.module.

module_load_include('inc', 'uc_cart', 'uc_cart.theme');

The above patch shouldn't be necessary if you clear your theme registry.

i cleared it twice:/

hm - very odd - something must be calling 'uc_coupon_theme_uc_cart_block_content()' directly -- i.e. without passing through theme(...), which handles including that file. can you put a debug-backtrace in there where you put the module_load_include() to find out how that's happening? alternatively, if "theme(...)" is being called, i guess it's possible that some other module is altering the theme registry -- try adding the following to theme.inc before line 1046

  if ($hook == 'uc_cart_block_content') drupal_set_message(print_r($info['includes'], TRUE));

to verify that the file is listed.

sure i ll let you know, i wanted to debug further but there is a problem with ssh server, i ll need to wait till monday

Thanks!