Hi Artio,
I purchase Booking Software on April 9th and have installed the component but I'm having an issue with the links to graphics and the thumbnails being presented properly. Booking is installed on Joomla 1.5.25 and PHP version 5.3.10

1) To this point I have Checked the permissions on my Cache/com_Booking folder and (that shows 755)
2) I have confirmed that the webserver is running GD2
3) I also loaded the component on a fresh new Yoo Theme Joomla site and I'm still seeing only empty container for where the images should appear.
4) When I look in the Cache/Com_booking folder I do see nested folders in there.

I'm out of ideas and would appreciate any assistance you can provide.