no it doesn't. before this i'm using the built in serial blocks. the only reason i'm switching is because the built in blocks doesn't have the block to check whether there is 'byte to read' before actually 'reading the data', causing me to get null or weird characters as explained in this topic,
therefore, i'm switching to your extension and it works excellently (i could also remove some blocks to deal with the "\n" that i get from using the built in serial component to read) but only this small weird .Open issue cause problem. I could actually deal with it by using if then blocks like so but I think if it can be fixed, the extra blocks just not necessarily needed.