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Hello support,

if I try to backup my table I get an AV. I'm using the newest version (54) with C++Builder2010. The problem seems to be a table with blobs and the size of the table is 8MB.

Here is the stack
main thread ($b68):
754adbe7 +17a KERNELBASE.dll
754afb6d +19a KERNELBASE.dll WideCharToMultiByte
0046b607 +01f UpdateMgr.exe System _17074
0046b72b +063 UpdateMgr.exe System @LStrFromPWCharLen
00416bab +00f UpdateMgr.exe Strhlpr AnsiFromUnicode
00866371 +021 UpdateMgr.exe ustring.cpp System.UnicodeString.t_str
0040809c +098 UpdateMgr.exe DbInstall.cpp 127 +7 TFrDbInstall.BackupData
004068ab +0b7 UpdateMgr.exe MainUpdMgr.cpp 540 +3 TFrmMain.BtDataExportClick
004e1fcf +06f UpdateMgr.exe Controls TControl.Click
0048acca +01e UpdateMgr.exe Stdctrls TCustomButton.Click
00681a53 +067 UpdateMgr.exe cxButtons TcxCustomButton.Click
0048b730 +010 UpdateMgr.exe Stdctrls TCustomButton.CNCommand
00681fad +045 UpdateMgr.exe cxButtons TcxCustomButton.CNCommand
004e1a64 +2d4 UpdateMgr.exe Controls TControl.WndProc
004e632c +568 UpdateMgr.exe Controls TWinControl.WndProc
0048a990 +06c UpdateMgr.exe Stdctrls TButtonControl.WndProc
00681f32 +06e UpdateMgr.exe cxButtons TcxCustomButton.WndProc
004e1688 +024 UpdateMgr.exe Controls TControl.Perform
004e647f +023 UpdateMgr.exe Controls _17082
004e6ee7 +00b UpdateMgr.exe Controls TWinControl.WMCommand
004e1a64 +2d4 UpdateMgr.exe Controls TControl.WndProc
004e632c +568 UpdateMgr.exe Controls TWinControl.WndProc
004e59cc +02c UpdateMgr.exe Controls TWinControl.MainWndProc
00436480 +014 UpdateMgr.exe Classes _17513
771a00e3 +02b ntdll.dll KiUserCallbackDispatcher
7598cd7c +047 USER32.dll SendMessageW
75990ad1 +016 USER32.dll CallWindowProcW
004e642c +0d8 UpdateMgr.exe Controls TWinControl.DefaultHandler
004e2420 +010 UpdateMgr.exe Controls TControl.WMLButtonUp
004e1a64 +2d4 UpdateMgr.exe Controls TControl.WndProc
004e632c +568 UpdateMgr.exe Controls TWinControl.WndProc
0048a990 +06c UpdateMgr.exe Stdctrls TButtonControl.WndProc
00681f32 +06e UpdateMgr.exe cxButtons TcxCustomButton.WndProc
004e59cc +02c UpdateMgr.exe Controls TWinControl.MainWndProc
00436480 +014 UpdateMgr.exe Classes _17513
75987df5 +00a USER32.dll DispatchMessageW
004c11ad +11d UpdateMgr.exe Forms TApplication.ProcessMessage
004c11f2 +00a UpdateMgr.exe Forms TApplication.HandleMessage
004c151d +0c9 UpdateMgr.exe Forms TApplication.Run
0040754b +0df UpdateMgr.exe UpdateMgr.cpp 28 +13 WinMain
00862fe0 +14c UpdateMgr.exe __startup
752f3675 +010 kernel32.dll BaseThreadInitThunk

Thanks
Thomas

Thank you for information. We are investigating this problem. As soon as we solve the problem we will let you know.

I could not reproduce the problem.
Please, try to download the latest MyDAC build (5.90.0.55) and check if this problem still exists. If not, send me a complete small sample to dmitryg*devart*com to demonstrate the problem, including a script to create and fill a table.

Same problem with new version, I sent the sample db-table to you.