Upgrade to 1.5.6 & Bugs

I found these problems after installing the newest upgrade:

1. admin->sales->mail
I can't send a mail. Getting message "E-Mail Message required!" even though I write it.

2. admin->catalog->products->edit->image
The image won't display and save after uploading it. I have to first click on "add image" & fill in "sort order" number, save it as it is (empty-without any image), go back in again and then I can upload image which now shows and I can save it.

3. For some reason voucher code doesn't want to apply its discount in shopping cart. Getting a message "The voucher was already used or is not valid anymore."

Website: http://hubbybearstore.com/index.php?route=common/home

Thanks very much in advance for any suggestions how to fix those bugs.

Regards,

1. http://forum.opencart.com/viewtopic.php ... ct#p421671

Len77 wrote: 2. admin->catalog->products->edit->image
The image won't display and save after uploading it. I have to first click on "add image" & fill in "sort order" number, save it as it is (empty-without any image), go back in again and then I can upload image which now shows and I can save it.

Len77, thank you for posting this. I have tried everything under the sun to get my products to even show. I tried it as you wrote and it worked. I know that it's not the way that it should work, but at least for the time being there's a work around.
Please let me know if you find a solution to this problem. I've tried a couple of things from our community forum, but nothing has worked yet.

Have a great week.
Mayra