Sugar Version 4.1.5e
Sugar Edition opensource
Category calls
Operating System linux
PHP Version 5.1.2
Database MySQL
Web Server Apache

Steps to reproduce
e.g.
1. click calls
2. select call
3. edit call

Error message or issue presented:

Warning: Invalid argument supplied for foreach() in /home/superiq6/public_html/SugarOS-Full-4.5.1e/include/json_config.php on line 186

Error message was at the top of edit calls section.
Can still edit, save and continue working fine

i have been editing the language files and remarking out some lines in menu.php for various modules and thats it
perhaps i fat-fingered something in one of those files ? i checked - nothing visible...
i also have edited the layouts of various modules and their respective subpanels using studio

was wondering if this can be fixed or can be ignored ...

thank you !