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klouvi's picture
Joined: 2020 Nov 8
The application “Command and Conquer 3” can’t be opened" in MacOS High Sierra version 10.13.6

I am trying to play [Command & Conquer 3 (CC3) Tiberium Wars](, but when I download all the parts, I am not able to get it start it (not even type the serial number).

I followed two approaches, after using StuffIt Expander 16, both resulted in the error message in title.

Attempt #1:
1) Download the zip file parts 1-5 to the same folder.
2) Open the part ending in 001.
3) I was able to get "Command and Conquer 3-Tiberium Wars.dmg" and open it.
4) Drag 'n Drop the CC3 icon on the Applications.
5) Then I clicked on the "Command and Conquer 3" cion, and got a pop-up The application “Command and Conquer 3” can’t be opened".

Attempt #2 (I know that MacOS Leopard and High Sierra are different, but I am desperate):
Same, but also used CC3_Updates and CC3_NoDVDs. The former zip had a patch for MacOS Leopard, CC3_108_MAC_PATCH and CC3_109_MAC_PATCH. I tried skipping the Leopard one, and use 1.08 and 1.09 only, but it 1.08 was failing. So I used the Leopard one for 1.08 (got a warning about optimization, but worked), and then both I applied 1.09.

Then I used copied-pasted "cnc3game.dat" from "CC3_NoDVDs" to their respective locations (as described in the accompanied info.rtf) in the CC3 package, but still I received the same error.

Any help please?


bloedmage's picture
Joined: 2020 Nov 16

This port of command & conquer 3 is very old, probably stopped working somewhere between 10.7-10.10. This is one of the "wine" ports, only a few of them worked on Sierra, all of them stopped working after Catalina.
For a way to play these games look at porting kit.

WhosIt.There's picture
Joined: 2014 Aug 23

You can get old Wine ports working in High Sierra by updating the Wine code inside them (rather than re-doing the entire porting process). I managed to do it for one game using Wineskin Winery, but I'm not sure which of the trial-and-error options actually worked.

adespoton's picture
Joined: 2015 Feb 15

WineSkin with the latest CodeWeavers engine is the method I use for most of my stuff; for older apps that stopped working with Catalina, the fix was as simple as generating a new skin and moving the binaries over.