Andy writes about the steps required to recreate the tables.sys and procs.sys files in GP Client Folder. It requires adding the duExtractSQLResources=TRUE line in the dex.ini file. Its one of the many tips which you get only from Microsoft Support. Often some of these are hidden in KB, but we just have trouble finding them.
Mark had covered dex.ini settings about an year back, which is a very useful read as well.Mariano has an extensive document with dex.ini settings out as well.