Same here, here's my filled-out support request template:
Support Request Template
What version of phpBB are you using?
What is your board's URL? http://www.moware.at/forum
Who do you host your board with?
Self-hosted Windows Server
How did you install your board?
I used the download package from phpBB.com
What is the most recent action performed on your board?
Update from a previous version of phpBB3
Is registration required to reproduce this issue?
Do you have any MODs installed?
What version of phpBB3 did you update from?
What MODs do you have installed?
some custom Anti-Guest Post Mod (posting.php, posting_editor.html)
What styles do you currently have installed?
What language(s) is your board currently using?
Which database type/version are you using?
MS SQL Server
What is your level of experience?
Comfortable with PHP and phpBB
When did your problem begin?
1. Downloaded phpBB-3.0.12_to_3.0.13.zip from the official homepage.
2. Extracted the files and copied the install folder to the board.
3. Tried to access http://.../install (both locally on the web server and remote via the web).
Please describe your problem.
Expected result: Install process starting.
Actual result: Empty page with the following message: "Trailing paths and PATH_INFO is not supported by phpBB 3.0"
Generated by SRT Generator
Thanks and best regards