I'm trying to install Limesurvey 2.52+160920 running the installation script in my web browser (Safari 10.0 on MacOS 10.10.5).

In step 4 "configuration" I want to insert the name and login info for an already existing MySQL database at my webhost. The database has a name like "12345-limesurvey" where the numbers and dash in the beginning is set by the webhost and cannot be changed by me. The installer gives an error message
"Database name is invalid."
Why would my database name be invalid, as I have been able to use names like that in every other occasion? How can I continue with the installation?

If I enter a database name that starts with letters instead of numbers, I can get to a next step for creating the database, but that is not an option for the two web hosts I'm currently using as both have the same numbers-dash-letters db naming scheme.

same concerns here ...

maccer wrote: If I enter a database name that starts with letters instead of numbers, I can get to a next step for creating the database, but that is not an option for the two web hosts I'm currently using as both have the same numbers-dash-letters db naming scheme.

The check routine for these "invalid" names is in this file:
Application->Models->InstallerConfigForm.php

The line can be modified or commented out.
I don't know why this validation rule was introduced.
Feel free to comment on this "bug" here (look in the notes, not in the bug description):
bugs.limesurvey.org/view.php?id=11621

jelo wrote: The line can be modified or commented out.

I guess we should add a param in config for that.

After some discussion with Carsten, it seems we're going to allow dash and number again.