I am using C++ Builder XE6 and XE7. I have both installed. Once I have all projects working in XE7 I will uninstall XE6.

All my projects work fine with XE6. I installed XE7 yesterday. After XE7 was installed I uninstalled Advantage Local Server and reinstalled local server (11.10.0.22).

All of my projects compile with XE7 with no errors. Some projects run just fine, other projects give me the 6420 error. I don't see anything that the projects that fail have in common. I tried deleting the AdsConnection and creating a new connection, this had no effect. If I set the 'IsConnected' to true, and make my tables 'Active', my data does appear in the DBGrids, so I do have a connection to the tables.

Also tried copying all the files from \Program files\Advantage 11.10\TDataset\Redistribute to my executable folder so I know it's using the 11.10 version and not any 10.10 files (which I also have installed for use with C++ Builder 5.0).

Not sure it matters, but I have XE6 installed on my C: drive, and XE7 installed on P:, both are local hard disks, not network drives.

Thanks for the help!

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The error can be seen here

www.rcscoringpro.com/tracks/6420.png

I have been using Advantage Local Server since about 2001, I have the components installed into C++ Builder, it is not the full blown Advantage Server. I've seen the 6420 error dozens of times over the years, always with Local Server (which is all I use on this PC). The file I installed was from this URL:

http://devzone.advantagedatabase.com/dz/content.aspx?Key=20&Release=19&Product=10&Platform=11

Could you tell me the names of the DLL's that are being used so I can search for duplicates that might be out of date?

Thanks!