You have to uninstall before you can reinstall.

To be totally clean, also do this after you uninstall:

Not sure to go for it. As API is way above my grasp and the fixes not really needed for the moment i will wait to see if there are some bugs delivered...
To all the API cracks in here: time to start working on some handy practice applications which will make all these "mission impossible"s possible 
And as i have no clue what API can make possible, i have not a wishlist yet, but i'm looking forward to the results. 

Toystorylab on Vimeo :     Crassitudes (my "Alter Ego") on Youtube: 

and that was crash number 4 man this version is unstable

...................................................................
My Youtube Channel

Friends - I want to thank Mike & Steve for all their help, but alas, I have uninstalled, downloaded and RE-installed my iClone 7 and I STILL cannot open the program! I was having no problems until I installed this 7.4 patch - now my iCLone is USELESS!  Is there a way to uninstall this and roll it BACK to version 7.3? I am dead in the water here and VERY unhappy.

Merry Christmas, Reallusion - Thanks for the crippling 'update' - now - GIVE ME BACK MY iCLONE!
(please! lol) ~V~

       Val RogueAnanda

Val,

We are *just* about to eat our Christmas Eve dinner (big turkey -- 26lbs -- and so much alcohol there's no way I'll be back online) but did you do all that Rampa said above at the top of this page?

There's no reason you can't install 7.3 -- if it's not working there is something wrong most likely with your hub.  Note: you can download the direct installs of 7.3, so that'a another alternative, but first things first -- get rid of ALL traces of iClone from your machine using Rampa's outlined procedure (hell - the eggnog is affecting me even now -- I've retyped this paragraph three times now).

Okay, sorry, will be offline until either tomorrow morning or MUCH later tonight.  But don't despair!

---

Alienware Aurora R12, Win 10, i9-119000KF, 3.5GHz CPU, 128GB RAM, RTX 3090 (24GB), Samsung 960 Pro 4TB M-2 SSD, TB+ Disk space
Mike "ex-genius" Kelley

If it just really does not want to work, you can always roll your system back to an earlier restore point.

Did you go ahead and download the latest full installer from your account? That will be 7.4, but it worked for me. Restart after your install, for good measure!

Rampa & Mike - Thank you so much for your time and for your responses! I tried this, but it did not work. I followed yours & Mike's instructions. I restarted after uninstall & temp folder deletion, as well as after re install. I tried this 3 times before I gave up - no soap! I am STILL getting the error @the startup banner and it closes the program before it can start - I will have to roll back to 7.3 with your help, as I haven't done that rollback thing before.
Merry Christmas, and thanks again for your time. ~V~

       Val RogueAnanda

Before that, try un-installing plugins. If you have Motion Live, un-install that first. You can reinstall a fresh version later.

Hopefully you have a recent restore point, if you end doing that. Anyway. Have a look here:
https://support.microsoft.com/en-us/help/12415/windows-10-recovery-options

Hi, Rogue Anime

Sorry for this new update caused you can't run iClone.
Did you install the Curve Editor before? If yes, please go to [Your iClone location]\\Bin64\Plugin\ then delete the file called "ICCurveEditor.dll" and try to restart the iClone again.

thanks

I can't even install the new iclone 7.4 update. As soon as the splash screen appears, there's another window that pops up, telling me that iclone has to close. Repeat ad infinitum. I had to restore my system.

I was hoping to be able to work with a repaired timeline, but no luck.

My latest movie THE GOLDEN MAN, and a few others: https://www.youtube.com/channel/UCIl1EqVCKitZzLqaNnLK0BA