Question : RewriteCond: cannot compile regular expression after moving to new server

I just moved my site to a new server and the site no longer loads. I get a "500 internal server error" when accessing the domain URL:
"The server encountered an internal error or misconfiguration and was unable to complete your request."

...and when I check the Apache error logs I see this error logged:
[Tue Jul 20 17:21:44 2010] [alert] [client 12345678.123] /var/www/html/sites/mysite.com/branches/.htaccess: RewriteCond: cannot compile regular expression ...[SEE CODE BELOW]...

Any ideas what could be causing this? Things were working fine on the previous server.

FYI - I am running the following on the new server:
* Fedora 12
* PHP 5.3.2
* Apache/2.2.15

         
          RewriteEngine on
RewriteCond $1 !^(index\.php|dsp\.php|dsp_all_offers\.php|ssp\.php|ssp_all_offers\.php|vsp\.php|vsp_all_offers\.php|zpa\.php|cms|media|style|js|images|test_zipcode\.php|robots\.txt)
RewriteRule ^(.*)$ /index.php?params=$1 [L]

Answer : RewriteCond: cannot compile regular expression after moving to new server

Just looking over your previous code, I see a lot of things that won't be necessary/good idea to use when using a GridView. Here is my advice before you start working on the front end - create a query that returns exactly what you want in your grid. Not that it's impossible to reformat things in a gridview, just from my experience, it's much easier to work with grids when the data you are binding to it is what you want in the grid.

Also, I have found using an ObjectDataSource as the data source of a gridview is hands-down the best implementation. If you don't know anything about ObjectDataSources, you should really read about them. Essentially, you create a function in a class in your project that returns a dataset (usually from a database select statement). You then indicate that function in your datasource. Finally, you identify that ObjectDataSource ID as the DataSourceID of the GridView. The reason I like this approach the best is you can then put the GridView and ObjectDataSource in an UpdatePanel and the whole thing will just "work" asynchronously (like paging and sorting).

Anyway, this should get you started.

<asp:GridView runat="server" ID="id1" AutoGenerateColumns="false" AllowSorting="true" AllowPaging="True">
<Columns>
<asp:ImageField DataImageUrlField="RowImageURL" />
<asp:HyperLinkField DataNavigateUrlFields="SubjectURL" DataTextField="Subject" HeaderText="Subject" SortExpression="Subject" />
<asp:BoundField HeaderText="From/To" DataField="FromUser" SortExpression="FromUser" />
<asp:BoundField HeaderText="Date" DataField="Created" SortExpression="Created" />
<asp:CheckBoxField />
</Columns>
</asp:GridView>