Hi, I am getting error message upon install. Can anybody identify problem?

Installing SilverStripe...
I am now running through the installation steps (this should take about 30 seconds)
If you receive a fatal error, refresh this page to continue the installation
• Creating 'mysite/_config.php'...
• Creating '.htaccess' file...
• Building database schema...
Warning: fopen(/tmp/silverstripe-cache/manifest_home_choiceh_public_html_silverstripe-v2.1.0_sapphire_main.php) [function.fopen]: failed to open stream: Permission denied in /home/choiceh/public_html/silverstripe-v2.1.0/sapphire/core/ManifestBuilder.php on line 133
Cannot write manifest file! Check permissions of /tmp/silverstripe-cache/manifest_home_choiceh_public_html_silverstripe-v2.1.0_sapphire_main.php

I second that.

I had no problems installing it on one 2mhost server.

Scond time around I get this?

possible causes:
1. silverstripe created a file which the webserver-user don't have the correct permissions to overwrite. please paste the unix-permissions for this file here. if you've got shell-access, please check which user apache is running on as well.
2. you don't have access to /tmp in the first place - in which case your php-instance is probably misconfigured (it should react to sys_get_temp_dir() or have $_ENV['tmp'] set)

the logic in question is in sapphire/core/Core.php->getTempFolder() - have a look at that function for debugging.