Dear all,
I think i got a similar problem.
I just installed Collabtive on à Wamp server (please don't blame me

) and I have a problem on project creation from the desktop page

Here is the php_error.log concerned line:
PHP Warning: Illegal string offset 'ID' in D:\wamp\www\collabtive\templates_c\122191cb91754659c408dab5131b18254778faba_0.file.addproject.tpl.php on line 132
Other bugs maybe related :
- When creating a new project, in the descrition field : only characters before the first special one are saved. (Eg : "Concerne la préparation" will be saved as "Concerne la pr"). If I edit the description after the creation, everything works fine. My table format is utf8_general_ci.
- When editing a project : the checkbox label "Accept all due date" is missing in the french version.

My detailed server config : Apache/2.4.9 (Win32) OpenSSL/1.0.1g PHP/5.5.12 Server at Port 80
php_mbstring module is active.
By the way thank you for this app wich is just exactly what I was looking for during years. I can throw away my crappy Excel file.