Install Error on my host. help please!

[Guest]

i was installing lastest of ps into my host(hostmonster)
after that, i go to my index page. there was blank page in my home page.
than i go to my cpanel, there are some errors in my log!

Error Logs

[Fri Nov 13 08:29:45 2009] CURRENT SERVER TIME
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MAIN error_log:
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[Fri Nov 13 08:29:10 2009] [notice] cannot use a full URL in a 401 ErrorDocument directive --- ignoring!
[Fri Nov 13 08:29:10 2009] [notice] cannot use a full URL in a 401 ErrorDocument directive --- ignoring!
[Fri Nov 13 08:29:10 2009] [notice] cannot use a full URL in a 401 ErrorDocument directive --- ignoring!
[Fri Nov 13 08:29:10 2009] [notice] cannot use a full URL in a 401 ErrorDocument directive --- ignoring!
[Fri Nov 13 08:29:15 2009] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Fri Nov 13 08:29:15 2009] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Fri Nov 13 08:29:16 2009] [notice] cannot use a full URL in a 401 ErrorDocument directive --- ignoring!
[Fri Nov 13 08:29:16 2009] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Fri Nov 13 08:29:17 2009] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Fri Nov 13 08:29:18 2009] [notice] cannot use a full URL in a 401 ErrorDocument directive --- ignoring!
[Fri Nov 13 08:29:18 2009] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Fri Nov 13 08:29:19 2009] [error] [client 213.251.134.187] Invalid method in request ment"
[Fri Nov 13 08:29:19 2009] [error] [client 213.251.134.187] File does not exist: /usr/local/apache/htdocs/501.shtml
[Fri Nov 13 08:29:21 2009] [notice] cannot use a full URL in a 401 ErrorDocument directive --- ignoring!
[Fri Nov 13 08:29:21 2009] [notice] cannot use a full URL in a 401 ErrorDocument directive --- ignoring!
[Fri Nov 13 08:29:22 2009] [notice] cannot use a full URL in a 401 ErrorDocument directive --- ignoring!
[Fri Nov 13 08:29:22 2009] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Fri Nov 13 08:29:23 2009] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Fri Nov 13 08:29:23 2009] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Fri Nov 13 08:29:24 2009] [notice] cannot use a full URL in a 401 ErrorDocument directive --- ignoring!
[Fri Nov 13 08:29:24 2009] [error] [client 213.251.134.187] Invalid method in request ment"
[Fri Nov 13 08:29:24 2009] [error] [client 213.251.134.187] File does not exist: /usr/local/apache/htdocs/501.shtml
[Fri Nov 13 08:29:25 2009] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Fri Nov 13 08:29:25 2009] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Fri Nov 13 08:29:25 2009] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Fri Nov 13 08:29:25 2009] [notice] cannot use a full URL in a 401 ErrorDocument directive --- ignoring!
[Fri Nov 13 08:29:25 2009] [notice] cannot use a full URL in a 401 ErrorDocument directive --- ignoring!
[Fri Nov 13 08:29:26 2009] [notice] cannot use a full URL in a 401 ErrorDocument directive --- ignoring!
[Fri Nov 13 08:29:26 2009] [notice] cannot use a full URL in a 401 ErrorDocument directive --- ignoring!
[Fri Nov 13 08:29:28 2009] [notice] cannot use a full URL in a 401 ErrorDocument directive --- ignoring!
[Fri Nov 13 08:29:28 2009] [notice] cannot use a full URL in a 401 ErrorDocument directive --- ignoring!
[Fri Nov 13 08:29:35 2009] [notice] cannot use a full URL in a 401 ErrorDocument directive --- ignoring!
[Fri Nov 13 08:29:35 2009] [notice] cannot use a full URL in a 401 ErrorDocument directive --- ignoring!
[Fri Nov 13 08:29:36 2009] [notice] cannot use a full URL in a 401 ErrorDocument directive --- ignoring!
[Fri Nov 13 08:29:38 2009] [notice] cannot use a full URL in a 401 ErrorDocument directive --- ignoring!
[Fri Nov 13 08:29:39 2009] [notice] cannot use a full URL in a 401 ErrorDocument directive --- ignoring!
[Fri Nov 13 08:29:40 2009] [notice] cannot use a full URL in a 401 ErrorDocument directive --- ignoring!
[Fri Nov 13 08:29:40 2009] [notice] cannot use a full URL in a 401 ErrorDocument directive --- ignoring!
[Fri Nov 13 08:29:42 2009] [error] [client 67.195.111.44] PHP Warning: PHP Startup: Unable to load dynamic library 'c:\\program files\\php\\ext/php_mbstring.dll' - c:\\program files\\php\\ext/php_mbstring.dll: cannot open shared object file: No such file or directory in Unknown on line 0
[Fri Nov 13 08:29:42 2009] [error] [client 67.195.111.44] PHP Warning: PHP Startup: Unable to load dynamic library 'c:\\program files\\php\\ext/php_curl.dll' - c:\\program files\\php\\ext/php_curl.dll: cannot open shared object file: No such file or directory in Unknown on line 0
[Fri Nov 13 08:29:42 2009] [error] [client 67.195.111.44] PHP Warning: PHP Startup: Unable to load dynamic library 'c:\\program files\\php\\ext/php_dbase.dll' - c:\\program files\\php\\ext/php_dbase.dll: cannot open shared object file: No such file or directory in Unknown on line 0
[Fri Nov 13 08:29:42 2009] [error] [client 67.195.111.44] PHP Warning: PHP Startup: Unable to load dynamic library 'c:\\program files\\php\\ext/php_exif.dll' - c:\\program files\\php\\ext/php_exif.dll: cannot open shared object file: No such file or directory in Unknown on line 0
PHP:5.2.11 MYSQL:5.0.81

[Guest]

Did you open a ticket with your host?