install fail due to corrupt file - Mac M2

I used the unreal launcher to download the latest unreal engine 5.51. Download and verification go fine, but at installation my Intego AV pops up with:

Selecting the repair option restarts the installation process and the popup inevitably reoccurs, until this message is displayed by the launcher:

The knowledge base only addresses this issue in windows PCs and suggests the file system needs to be converted to NTFS. A search of the forums brings up repeated issues with Mac computers that are solved by specifically using the APFS file system that is native to my Mac. I’m reticent to change from my computers native file structure and I believe the addition of the AV detection of an infected file indicates that this is not a file system related issue. Can anyone help?