You could use OpenGL render (the button in the 3D View header) in Wireframe view mode. Every curve is rendered as a line without the need for any beveling. Animations can also be OpenGL rendered.

It is very fast. But there is no possibility to set the line width. It's always 1px.

To support transparency you have to set the shading mode to GLSL (press N in 3D View and look for Shading).

How to render a curve without creating meshes?
I've been developing a SharePoint Server 2010 site, which uses Forms Based Authentication. As part of my custom login script, I used the following C# code:

System.IdentityModel.Tokens.SecurityToken token = SPSecurityContext.SecurityTokenForFormsAuthentication(new Uri(SPContext.Current.Web.Url), Membership.Providers["FBAMembershipProvider"].Name, Roles.Providers["FBARoleProvider"].Name, FBAUserName, FBAPassword);
SPFederationAuthenticationModule.Current.SetPrincipalAndWriteSessionToken(token);


On my dev server it works just fine, creating the appropriate token and allowing a user to be logged in with FBA. 

However, I'm now transferring all my code to a new SharePoint Server 2010 server, and the code above isn't working. The first line returns a token with a null value.

Can anyone help me understand why?

In the back of my mind I'm thinking that I need to install something on the new server, but I can't for the life of me remember what it is. Something like ADSF, or similar acronym. I check the Control Panel > Programs and Features on the old server, but couldn't see anything that might be relevant.

Any ideas?

[update] Following Anders Rask's request for the ULS logs, I think I found the cause of my issue. Now I need to find the solution (I think I've seen this before)

10/18/2011 22:07:24.65  w3wp.exe (0x0968)                           0x0758  SharePoint Foundation           Claims Authentication           0000    Unexpected  Password check on 'mytest@email.com' generated exception: 'System.Configuration.Provider.ProviderException: You must specify a non-autogenerated machine key to store passwords in the encrypted format. Either specify a different passwordFormat, or change the machineKey configuration to use a non-autogenerated decryption key.     at System.Web.Security.MembershipProvider.EncryptPassword(Byte[] password)     at System.Web.Security.MembershipProvider.EncodePassword(String pass, Int32 passwordFormat, String salt)     at System.Web.Security.SqlMembershipProvider.CheckPassword(String username, String password, Boolean updateLastLoginActivityDate, Boolean failIfNotApproved, String&amp; salt, Int32&amp; passwordFormat)     at System.Web.Security.SqlMembershipProvider.ValidateUser(String username, Str...    
10/18/2011 22:07:24.65* w3wp.exe (0x0968)                           0x0758  SharePoint Foundation           Claims Authentication           0000    Unexpected  ...ing password)     at Microsoft.SharePoint.IdentityModel.SPFormsUserNameSecurityTokenHandler.ValidateToken(SecurityToken token)'.  
10/18/2011 22:07:24.65  w3wp.exe (0x0968)                           0x0758  SharePoint Foundation           Claims Authentication           fo1t    Monitorable SPSecurityTokenService.Issue() failed: System.ServiceModel.FaultException`1[Microsoft.IdentityModel.Tokens.FailedAuthenticationException]: The security token username and password could not be validated. (Fault Detail is equal to Microsoft.IdentityModel.Tokens.FailedAuthenticationException: The security token username and password could not be validated.).   
10/18/2011 22:07:24.66  w3wp.exe (0x0E00)                           0x11DC  SharePoint Foundation           Claims Authentication           fsq7    High        Request for security token failed with exception: System.ServiceModel.FaultException: The security token username and password could not be validated.     at Microsoft.IdentityModel.Protocols.WSTrust.WSTrustChannel.ReadResponse(Message response)     at Microsoft.IdentityModel.Protocols.WSTrust.WSTrustChannel.Issue(RequestSecurityToken rst, RequestSecurityTokenResponse&amp; rstr)     at Microsoft.IdentityModel.Protocols.WSTrust.WSTrustChannel.Issue(RequestSecurityToken rst)     at Microsoft.SharePoint.SPSecurityContext.SecurityTokenForContext(Uri context, Boolean bearerToken, SecurityToken onBehalfOf, SecurityToken actAs, SecurityToken delegateTo)  4acf80d8-9c59-457f-a859-60f8a9af6d46
10/18/2011 22:07:24.66  w3wp.exe (0x0E00)                           0x11DC  SharePoint Foundation           Claims Authentication           8306    Critical    An exception occurred when trying to issue security token: The security token username and password could not be validated..    4acf80d8-9c59-457f-a859-60f8a9af6d46

