IronPortable fail to start after chrome is started

Hi all, due to the number of email accounts, I have been using iron and chrome together, mostly one for work and one for general net surfing. After the latest update, I've found that if I have chrome already started, lauching ironPortable would cause an error "Another instance of ${APPNAME}" is already running. Please close other instances of ${APPNAME} before launching ${PORTABLEAPPNAME}. I set both chrome and iron to start automatically normally and it seems that iron is faster so there is no problems most of the time. However, if I close iron and restart the error would appear. I need to close chrome to start iron, then no error.

Please advise, thanks a lot.