The issue is when you install BugNET for the first time the BugNet_IssueRevision_CreateNewIssueRevision stored procedure is not the most current version based on the updated to version 1.2. The below query should fix this issue, you will need to run it against your bugnet database.
IF EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[BugNet_IssueRevision_CreateNewIssueRevision]') AND type in (N'P', N'PC'))
DROP PROCEDURE [dbo].[BugNet_IssueRevision_CreateNewIssueRevision]
GO
IF EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[BugNet_IssueRevision_GetIssueRevisionsByIssueId]') AND type in (N'P', N'PC'))
DROP PROCEDURE [dbo].[BugNet_IssueRevision_GetIssueRevisionsByIssueId]
GO
CREATE PROCEDURE [dbo].[BugNet_IssueRevision_CreateNewIssueRevision]
@IssueId int,
@Revision int,
@Repository nvarchar(400),
@RevisionDate nvarchar(100),
@RevisionAuthor nvarchar(100),
@RevisionMessage ntext,
@Changeset nvarchar(100),
@Branch nvarchar(255)
AS
INSERT BugNet_IssueRevisions
(
Revision,
IssueId,
Repository,
RevisionAuthor,
RevisionDate,
RevisionMessage,
DateCreated,
Changeset,
Branch
)
VALUES
(
@Revision,
@IssueId,
@Repository,
@RevisionAuthor,
@RevisionDate,
@RevisionMessage,
GETDATE(),
@Changeset,
@Branch
)
RETURN SCOPE_IDENTITY()
GO
CREATE PROCEDURE [dbo].[BugNet_IssueRevision_GetIssueRevisionsByIssueId]
@IssueId Int
AS
SELECT *
FROM BugNet_IssueRevisions
WHERE IssueId = @IssueId
GO