MATLAB: A new block named ‘modelName/blockName’ cannot be added.

matlab simulink add_blocksimulink

Hello,
I am using Matlab 7.10.0.499 (R2010a) and have a strange bug.
When I launch my program, I got an error "A new block named 'modelName/blockName' cannot be added." When I comment out the line "add_block('blockPath', 'modelName/blockName' ), the program works. More strangely, if I write the same line in console the block is added to the model with no error.
Anyone has any idea why it does not work? Is there any concurrency issues or something like that?
Regards

Best Answer

It could be due to the reason, you are trying to add a block with the name which already exists in the destination path.
To avoid the possibility of adding block with sane name, set MakeNameUnique property to on.
add_block('blockPath', 'modelName/blockName' ,'MakeNameUnique', 'on');
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