Problem installing expansions

Hello!
After downloading the sims 3 base game, I've been following your guide on how to install it. However, I've been having trouble with step 3.
For some reason, my laptop won't open the installation programs for the expansion packs. I've tried installing 3 different ones: seasons, uni life and the master suit stuff.
I just can't seem to figure out what I'm doing wrong. Is it my laptop or am I at fault?
Here's a screenshot of the message (Don't know if it's relevant but I'm using OS X 10.11.3)

Spoiler:

Thanks for the quick reply! 
Still can't get the expansions packs working. I've tried following the Mac guide, but 1. the cracked mac torrent is not available, and 2. converting the expansion packs to dmg didn't really work out. My disk utility program keeps making the new disk images only 100 mb, so I can't copy any of the exp pack files to it, and when I create a new image directly from the folder, I still get the same message as the one in the screenshot.
Applying the ultimate fix without installing exp packs doesn't work either, as it said so in the installation guide.
Such a hassle, these Macs  Thanks for the help, but I'm starting to give up 

That'd be great, thanks!

Hi there! It's been a while since your original post, but if you or anyone else is still looking to solve this, I would like to throw in some input.

I may be wrong since I can't read the language your computer is in, but it looks like the expansion pack you're trying to install is not mounted to a disk image (.dmg). You mentioned you couldn't create a disk larger than 100mb; when in creating the new image in disk utility, be sure you don't have any other drives selected when you press "New Image."

When you create the .dmg, disk utility should look like this:



From there, copy all of the files that you extracted (using Stuffit Expander) from the expansion .rar file (the torrent) onto the blank disk image. Here's a screenshot of what Finder's sidebar looks like with the disk image mounted. Your "Disk Image" would be whatever you named it.



If running the installer still yields an error, I will try to help more, but I think this may be the problem.


-Julia

Thank you both for the reply! I figured out a while ago how to create the disk image (I think it had something to do with not reading the instructions properly), but couldn't get past some of the other steps. I personally gave up because I don't have a lot of time to try and figure out where I made mistakes, but maybe someone else finds your tips useful ^^

r0ario wrote:Hi there! It's been a while since your original post, but if you or anyone else is still looking to solve this, I would like to throw in some input.

I may be wrong since I can't read the language your computer is in, but it looks like the expansion pack you're trying to install is not mounted to a disk image (.dmg). You mentioned you couldn't create a disk larger than 100mb; when in creating the new image in disk utility, be sure you don't have any other drives selected when you press "New Image."

When you create the .dmg, disk utility should look like this:



From there, copy all of the files that you extracted (using Stuffit Expander) from the expansion .rar file (the torrent) onto the blank disk image. Here's a screenshot of what Finder's sidebar looks like with the disk image mounted. Your "Disk Image" would be whatever you named it.



If running the installer still yields an error, I will try to help more, but I think this may be the problem.


-Julia

Hi Julia, do you happen to know how to make it work with the new Disk Utility on Mac Sierra, I can seem to get it to work. If I try making a disk image with CD/DVD partitions, it never goes larger than about 500MB, and I've tried just about every combination of disk image there is but every time I try to open the installer I just get the error: "The application “The Sims™ 3 Movie Stuff Installer” can’t be opened." It's very frustrating, I just want to install the other expansions!