Exception (9): epc1=0x40100262 epc2=0x00000000 epc3=0x00000000 excvaddr=0xc010e109 depc=0x00000000

I have done as exemplified, but the ExceptionDecoder menu is not appear in my Arudino IDE. After found out, it turned out that my Arduino IDE version didn't support these tools.

Another question, if I downgrade my Arduino IDE, will all my libraries be lost??