"Input string was not in a correct format"

I am trying to do an insert into a SQL server table but I am getting an "input string was not in correct format" error. Does this error always refer to SQL string problem? I put in a breakpoint and looked at the SQL and it looks good but until I figure this out I will be tracing through the code. Any input greatly appreciated.

MyCmd.CommandText = sSQL
MyCmd.ExecuteNonQuery() 'Line where I get the error
Thanks,
JoeThis usually indicates there is a data type mismatch problem. You've probably assigned a value to a parameter which was expecting avalue with a different data type.
|||Ok, in response to your feedback, I've shortened the SQL insert string and I plan on trying to insert first just one field and then next two fields and so on so I can determine which field is giving me a problem, however I can't even insert one field. My code:
Try
MyCmd.CommandText = "INSERT INTO tblTest (intProjectID) VALUES (1)"
MyCmd.ExecuteNonQuery()
Catch e As System.Data.SqlClient.SqlException
Response.Write(e.Message)
End Try
Is still giving me the same errror:
"Input string was not in a correct format" for the MyCmd.ExecuteNonQuery line.
intProjectID of tblTest field is type "int". What am I doing wrong?
Thanks in advance,
Joe