Why do I receive a segmentation violation after modifying any blocks in the SimDriveline library in SimDriveline 1.1 (R14SP2+)?

I added an extra connection port to a block in the SimDriveline library. However, when I tried to re-open the block by double-clicking it, I received the following segmentation violation:

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        Segmentation violation detected at Mon May 30 14:43:42 2005

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 Configuration:

   MATLAB Version:   7.0.4.365 (R14) Service Pack 2

   MATLAB License:   DEMO

   Operating System: Microsoft Windows 2000

   Window System:    Version 5.0 (Build 2195: Service Pack 4)

   Processor ID:     x86 Family 6 Model 11 Stepping 1, GenuineIntel

   Virtual Machine:  Java 1.5.0 with Sun Microsystems Inc. Java HotSpot(TM) Client VM

     (mixed mode)

   Default Charset:  ibm-5348_P100-1997

 Stack Trace:

   [0] libmx.dll:_mxSetFieldByNumber(0x197fe760, 0, 0, 0x1b8bfd20) + 59 bytes

   [1] dastudio.dll:public: static struct mxArray_tag * __cdecl DADialog::allocateDialogSchemaMethod(class UDInterface *,char const *)(0x1b8bf9e0 "ôæ\xìæ\x", 0x79ac95cd, 0x1b508600, 0x19507c70 "Ø:\nz") + 181 bytes

   [2] dastudio.dll:public: class UDInterface * __thiscall DADialog::createInterface(class UDInterface *,char const *,enum DialogBehavior)(0x1b8bf9e0 "ôæ\xìæ\x", 0x79ac95cd, 0, 0x1b508600) + 92 bytes

   [3] dastudio.dll:class UDInterface * __cdecl DASCreateSimulinkDialog(class UDInterface *,bool,bool)(0x1b8bf9e0 "ôæ\xìæ\x", 1, 0, 0) + 67 bytes

   [4] simulink.dll:class UDInterface * __cdecl slCreateBlockDialog(struct slBlock_tag *,enum DialogType,struct slDialogInfo_tag *,bool)(0x1b508600, 1, 0x1f5e37c4, 1) + 802 bytes

   [5] simulink.dll:_maskOpenDialogBox(0, 0x00cdae83, 0x00508600, 0x00cdaea8 "ЮÍ") + 409 bytes

   [6] simulink.dll:struct slErrMsg_tag * __cdecl BlockOpenMaskDlg(struct slBlock_tag *,struct BlockOpenRec *)(0, 0x1b508600, 0x79e29aec, 0x1ba62df8) + 46 bytes

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Answer 1

[MathWorks Support Team]

We have verified that there is a bug in SimDriveline 1.1 (R14SP2+) in the way that the Differential gear block handles modifications.

To workaround this issue, select the block then execute the following command before double-clicking the modified library block:

set_param (gcb, 'DialogController', '');

It is not recommended or supported to modify a built-in library block as it contains callbacks and S-functions associated with the block that are not editable. Thus changing these blocks may lead to unexpected failures.