Re: How do I fix bad image error??

Install latest Visual C++ redistributable from here: https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads

Remember to get the correct version for your OS (x86 or x64). If in doubt try both. You will get an error if you try to install the wrong version.

You may need to repair The Sims 4 after doing this. Rightclick it in Origin and select Repair.