Running multiple user profiles not working in Firefox 32.0.3

Hello. I have multiple user profiles for work and private use. Today i decided to use Firefox for private use again (currently using Chrome for private use). Because on Chrome, video is "pixelated" when video quality is higher than 720p. Also for stability purposes, If Firefox crashes, which happens a lot, i don't lose everything. Anyway, i use the profile manager for running multiple user profiles. The problem is when i try to open a private profile when already running a work profile, it opens a new work profile window, not a private one. I use this shortcut: "C:\Program Files (x86)\Mozilla Firefox\firefox.exe" -P default -noremote The "default" profile is work, i have a different shortcut which is the private one: "C:\Program Files (x86)\Mozilla Firefox\firefox.exe" -P private -noremote Any help will be much appreciated. Thank you.