# Launching RV 7.5.1 on mac (not RV64) **URL:** \ **Category:** RV\ **Created:** [October 15, 2019, 11:28am UTC](https://community.shotgridsoftware.com/t/launching-rv-7-5-1-on-mac-not-rv64/3374 "2019-10-15T11:28:39Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Michael\_Illingworth](https://sea1.discourse-cdn.com/shotgunsoftware/user_avatar/community.shotgridsoftware.com/michael_illingworth/32/627_2.png) [@Michael\_Illingworth](https://community.shotgridsoftware.com/u/Michael_Illingworth)\ **Post date:** [October 15, 2019, 11:28am UTC](https://community.shotgridsoftware.com/t/launching-rv-7-5-1-on-mac-not-rv64/3374/1 "2019-10-15T11:28:39Z")
I have a playlist I want to review on my mac but when I ‘Play in RV’ it launches RV64. How do I get it to use my newly installed ‘RV’? I can’t see any entries for this on the software page. Many thanks, Michael ---
**Author:** ![compaga](https://sea1.discourse-cdn.com/shotgunsoftware/user_avatar/community.shotgridsoftware.com/compaga/32/3770_2.png) [@compaga](https://community.shotgridsoftware.com/u/compaga)\ **Post date:** [October 15, 2019, 2:32pm UTC](https://community.shotgridsoftware.com/t/launching-rv-7-5-1-on-mac-not-rv64/3374/2 "2019-10-15T14:32:37Z")
Hi Michael, Welcome to Community @ Shotgun From the command line, navigate to the installed location and run the following command: _./RV -registerHandler_ This command will register the current binary has the default handler for “Play in RV”. Hope this fix your issue. Regards, Alain ---
**Author:** ![Michael\_Illingworth](https://sea1.discourse-cdn.com/shotgunsoftware/user_avatar/community.shotgridsoftware.com/michael_illingworth/32/627_2.png) [@Michael\_Illingworth](https://community.shotgridsoftware.com/u/Michael_Illingworth)\ **Post date:** [October 15, 2019, 2:39pm UTC](https://community.shotgridsoftware.com/t/launching-rv-7-5-1-on-mac-not-rv64/3374/3 "2019-10-15T14:39:03Z")
Great - thank you Alain. That fixed it but now my playlist won’t launch - I’m getting the spinning wheel so I can’t tell what the errors are. Should I open a ticket? Michael ---
**Author:** ![alexaz](https://sea1.discourse-cdn.com/shotgunsoftware/user_avatar/community.shotgridsoftware.com/alexaz/32/82_2.png) [@alexaz](https://community.shotgridsoftware.com/u/alexaz)\ **Post date:** [October 15, 2019, 3:07pm UTC](https://community.shotgridsoftware.com/t/launching-rv-7-5-1-on-mac-not-rv64/3374/4 "2019-10-15T15:07:26Z")
Hi Michael, Thank you for using community! There are a couple of things you can check first before opening up a ticket with us: - What version of Shotgun are you using and what browser? - Do you have Screening Room or Shotgun Review enabled? Thanks, Alexa ---
**Author:** ![Michael\_Illingworth](https://sea1.discourse-cdn.com/shotgunsoftware/user_avatar/community.shotgridsoftware.com/michael_illingworth/32/627_2.png) [@Michael\_Illingworth](https://community.shotgridsoftware.com/u/Michael_Illingworth)\ **Post date:** [October 15, 2019, 3:26pm UTC](https://community.shotgridsoftware.com/t/launching-rv-7-5-1-on-mac-not-rv64/3374/5 "2019-10-15T15:26:30Z")
Hi Alexa - it’s launching fine from the website - it’s just locking up once it’s loaded my playlist as a timeline. I’m using shotgun review ---
**Author:** ![alexaz](https://sea1.discourse-cdn.com/shotgunsoftware/user_avatar/community.shotgridsoftware.com/alexaz/32/82_2.png) [@alexaz](https://community.shotgridsoftware.com/u/alexaz)\ **Post date:** [October 22, 2019, 11:37pm UTC](https://community.shotgridsoftware.com/t/launching-rv-7-5-1-on-mac-not-rv64/3374/6 "2019-10-22T23:37:56Z")
Hey Michael, Are you using a custom version of Toolkit by chance? Also have you tried cleaning out the Shotgun Toolkit cache to see if it helps? (Example: Windows: `C:\Program Files\Shotgun\`, Mac: `Library/Application\ Support/Shotgun`).