Doesn't work on Catalina 10.15.4

[Tobias-Bauer]

When you try installing it on Catalina 10.15.4 it will stop you from opening apps like safari, app store, music and so on. I fixed this issue by copying the old file back via the terminal.

[imyelmo]

I have the same issue, related info and findings I got:

Mac model:: MacBookPro12,1 iPad model:: iPad8,1

Mac version (optional): 10.15.4 iPad version (optional): 13.4

Comments:

I have found the following error related with custom/adhoc identity after signing properly SideCore:

Dyld Error Message: Library not loaded: /System/Library/PrivateFrameworks/SidecarCore.framework/Versions/A/SidecarCore Referenced from: /System/Library/PrivateFrameworks/MarkupUI.framework/Versions/A/MarkupUI Reason: no suitable image found. Did find: /System/Library/PrivateFrameworks/SidecarCore.framework/Versions/A/SidecarCore: code signature in (/System/Library/PrivateFrameworks/SidecarCore.framework/Versions/A/SidecarCore) not valid for use in process using Library Validation: mapped file has no Team ID and is not a platform binary (signed with custom identity or adhoc?)

Might it be necessary extra workaround on the signing process to solve this issue?

[imyelmo]

I have the same issue after upgrading Xcode to its last version.

[traversalnat]

I have the same issue and it's probably related to the new Apple Signature mechanism.

[traversalnat]

There is a solution in https://github.com/ben-z/free-sidecar for 10.15.4 user.

[pookjw]

Fixed on Version 14. If you already patched with Version 13, replace SidecarCore to original one and patch again with Version 14.

[herbit]

So it will work again with SIP enabled?

[Tobias-Bauer]

Version 14 fixed the issue