"Unable to write entry" - Can't install on Joomla 1.5 running on WAMP

Hi,

When I try and install AJAX photo album, I'm getting this error message:

Warning: file_put_contents(C:\wamp\www\tmp\install_4880f8e770988\) [function.file-put-contents]: failed to open stream: Invalid argument in C:\wamp\www\libraries\joomla\filesystem\file.php on line 298

The ionCube loaders are working - I've checked using the included helper file.

Can anyone help please?

Cheers

Bob

Never seen this error before. You are installing locally? Can you install other components correctly?