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having a challenge with Stonefield SDT 6.0 Database Explorer when the Codemine development environment is running. I'm using VFP 7.0, SDT 6.0, Codemine 6.1.20, SFQuery 5.1k, and SFReports 5.1f. Is there anyone running this exact mix ?

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I'm running the same except query and report with no problems. I found if I recompiled the projects containing CM and SDT libraries from outside CM (in other words, without the CM Develeopment environment running, then everything worked fine. AFAIK, Query and Report aren't supported anymore; and I'm not sure whether they would work under 7.0. You might try removing those two, and then see if things work OK. Note too, there is a CM 6.1.21 posted just a few days ago.