ambiguous column name 'sortorder'

Hi, I have installed Contour on a Windows 2003 server with SQL Server 2000 (had to modify the manual install scripts to run on 2k). I was able to create my first form but immediately after recieved the above error. Has anyone seen this before? This error appears in all nodes of Contour including the Contour Security tab in the Users section. 

[SqlHelperException: Umbraco Exception (DataLayer): SQL helper exception in ExecuteReader]
   umbraco.DataLayer.SqlHelper`1.ExecuteReader(String commandText, IParameter[] parameters) +137
   Umbraco.Forms.Data.Storage.FieldStorage.GetAllFields(FieldSet fieldset) in d:\TeamCity\buildAgent\work\39da791f9304089a\Umbraco.Forms.Core\Data\FormStorage\FieldStorage.cs:67
   Umbraco.Forms.Data.Storage.FieldSetStorage.GetAllFieldSets(Page page) in d:\TeamCity\buildAgent\work\39da791f9304089a\Umbraco.Forms.Core\Data\FormStorage\FieldSetStorage.cs:42
   Umbraco.Forms.Data.Storage.PageStorage.GetAllPages(Form form) in d:\TeamCity\buildAgent\work\39da791f9304089a\Umbraco.Forms.Core\Data\FormStorage\PageStorage.cs:41
   Umbraco.Forms.Data.Storage.<>c__DisplayClass2.<GetAllForms>b__0() in d:\TeamCity\buildAgent\work\39da791f9304089a\Umbraco.Forms.Core\Data\FormStorage\FormStorage.cs:51
   umbraco.cms.businesslogic.cache.Cache.GetCacheItem(String cacheKey, Object syncLock, CacheItemPriority priority, CacheItemRemovedCallback refreshAction, CacheDependency cacheDependency, TimeSpan timeout, GetCacheItemDelegate`1 getCacheItem) +109
   umbraco.cms.businesslogic.cache.Cache.GetCacheItem(String cacheKey, Object syncLock, CacheItemPriority priority, CacheItemRemovedCallback refreshAction, TimeSpan timeout, GetCacheItemDelegate`1 getCacheItem) +84
   umbraco.cms.businesslogic.cache.Cache.GetCacheItem(String cacheKey, Object syncLock, CacheItemRemovedCallback refreshAction, TimeSpan timeout, GetCacheItemDelegate`1 getCacheItem) +80
   Umbraco.Forms.Core.Services.CacheService.GetCacheItem(String cacheKey, Object syncLock, TimeSpan timeout, GetCacheItemDelegate`1 getCacheItem) in d:\TeamCity\buildAgent\work\39da791f9304089a\Umbraco.Forms.Core\Services\CacheService\CacheService.cs:62
   Umbraco.Forms.Data.Storage.FormStorage.GetAllForms() in d:\TeamCity\buildAgent\work\39da791f9304089a\Umbraco.Forms.Core\Data\FormStorage\FormStorage.cs:48
   Umbraco.Forms.UI.Dashboard.FormsDashboard.Page_Load(Object sender, EventArgs e) in d:\TeamCity\buildAgent\work\39da791f9304089a\Umbraco.Forms.UI\Dashboard\FormsDashboard.ascx.cs:53
   System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +15

Thanks,
Nik