We are running Vantage 6.1 with a Progress 9.1D back end. The database is kept on a Windows 2000 SP 4 server. I query the database on my Windows 7 64 Bit machine using DataDirect Connect for ODBC 5.1. This works great and has for a while. I recently encountered an issue with some of my BIG queries. (The only thing that may have changed was the database grew in size). After running for a while I get the following message Error1: ERROR [HY000] [DataDirect][ODBC PROGRESS driver][PROGRESS] Unable to allocate disk block for temp table use [MM – No data block] (7631). These queries are being run from VB.NET 2010. I know virtually nothing with the backend database other than how to query it. If any advice involves access from Progress Explorer or such please provide a step by step guide e.g ( Log into Server 2000-> Go to programs Progress Explorer etc). This is a production system and very fragile so I am hoping any changes have little to no impact or the chance of data corruption.