Borland C# Builder
I've been using Borland C# Builder a bit this week. I was getting an unknown error 0x80131044 frequently in the IDE.
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Borland Data Provider
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Unknown error - HRESULT 0x80131044
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OK
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It happened when I tried to create a new Web Application and it happened when I was using the Borland independant database provider components. I noticed that 1.2 version system assemblies were appearing here and there in stacks from the tool. Hmmm... I uninstalled the PDC build of Visual Studio .NET Whidbey and all is happy again with Borland C# Builder.