Alex, you were getting blank page because of following error:
What is lang_2.php?
This is the file for your Spanish language. Line 1159 of this file ends incorrectly( you can check yourself):
That is probably why image upload didn't work on your site. Basically this file is corrupted.
I have deactivated Spanish language on your site and have made English default one. This opened up your site and solved blank page error.
Once your site opened, DEBUG showed following errors ( pay attention only to WARNINGS):
So I went into your admin panel and "Mobile" and "Newsfeedfilter" plugins were in the list of your ACTIVE plugins. Which means that you deleted them incorrectly. Most likely you removed the folders directly on your server and did't use "Uninstall" option. Please don't do so in future. Deleting plugin files doesn't remove the plugins completely. Always use "Uninstall" to remove plugins. I have deactivated "Mobile" and "Newsfeedfilter" plugins for you. So the list of errors was narrowed down to "Route "mobile.mobile" not found".
What it means?
This means that software update to 1.6 was not successfull. Which also explains why you don't see "Mobile" menu in your admin panel and why
www.sitename.com/mobile-version URL results in "Page Not Found" error.
What to do?
You will need to update platform once more.
1 Deactivate all of your plugins.
2 Go to your database, find
ow_base_config table.
3 Within that table find
soft_build row. It is currently set to 7157. Change this value to for example, 7150.
4 Once value is changed go to
http://amigoshn.com/ow_updates/ . At this stage system will tell you that your platform is NOT up to date and that you can update it now. Click the update link and go through regular update process again.
This should solve mobile version issues for you.
5 Once platform is up to date and mobile version is working, activate your plugins ONE BY ONE. Check your site after activating each plugin.
6 If everything goes well, delete Spanish language you currently have from admin panel and add this language again from scratch.