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sprintf changed behavior

Hi. I have an Arduino circuit and code (from two months ago) where I could format LCD string with sprintf.

Today I tryed to run this circuit/code and sprintf isn't working. 

Anyone experiencing this problem?

Any tip?

Thanks for your help.

 

char text[20];

sprintf(text,"%02d",value);

 

very simple. it was ok two months ago and now doesn't work anymore 

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