[Solved] Error after clicking Products - Add new product

[Guest]

Greetings! I'm trying to add a new product and get a weird error. I Googled it but to no avail.

 

I've attached the screen capture for your convenience.

system:

WAMP on Windows 8 running PS 1.6.14 (latest production)

Apache/2.4.9 (Win64) PHP/5.5.12

Loaded Modules: core mod_win32 mpm_winnt http_core mod_so mod_access_compat mod_actions mod_alias mod_allowmethods mod_asis mod_auth_basic mod_authn_core mod_authn_file mod_authz_core mod_authz_groupfile mod_authz_host mod_authz_user mod_autoindex mod_cache mod_cache_disk mod_cgi mod_deflate mod_dir mod_env mod_file_cache mod_include mod_isapi mod_log_config mod_mime mod_negotiation mod_rewrite mod_setenvif mod_vhost_alias mod_php5

 

I'm having a derp moment here, I'll consider this the end of my programming day.

 

Thanks for your time.

 

EDIT 3rd of april:

 

So I've traced this back to AdminProductsController.php LINE 4419 inside a method called initFormQuantities(). I can't find any usages of this method though but it must be called somewhere?

 

edit 2:

in the multistore dropdown on top of the screenshot there's something selected that should not be possible: Group Main. Once this was changed the problem was solved. I can't reselect Group Main so don't know how it was possible.

Edited April 6, 2015 by Guest (see edit history)