Yes i can start the App. As usual the support said me that it takes not less than two days for an answer.

Thank you Dr. Sassi.
I rendered the project some hours ago. I saved and closed c4d. Than the client asked me to modify some props and I was not able to re-open thes project. All the others projects are good but this.
I re-installed the R26.110 version but every time iI try to re-open this big project c4d crash.
Gianni
Process: Cinema 4D [8714]
Path: /Applications/Maxon Cinema 4D R26/Cinema 4D.app/Contents/MacOS/Cinema 4D
Identifier: net.maxon.cinema4d
Version: 26.1 (971937505)
Code Type: ARM-64 (Native)
Parent Process: launchd [1]
User ID: 503

Date/Time: 2023-07-15 23:34:09.8071 +0200
OS Version: macOS 12.4 (21F79)
Report Version: 12
Anonymous UUID: 3BA840B7-6F66-9E5F-D1BC-3F4425C24B47

Time Awake Since Boot: 3000 seconds

System Integrity Protection: enabled

Crashed Thread: 244

Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x7ffffffffffffff0 -> 0xfffffffffffffff0 (possible pointer authentication failure)
Exception Codes: 0x0000000000000001, 0x7ffffffffffffff0
Exception Note: EXC_CORPSE_NOTIFY

Termination Reason: Namespace SIGNAL, Code 11 Segmentation fault: 11
Terminating Process: exc handler [8714]

VM Region Info: 0xfffffffffffffff0 is not in any region. Bytes after previous region: 18446743592673214449
REGION TYPE START - END [ VSIZE] PRT/MAX SHRMOD REGION DETAIL
commpage (reserved) 1000000000-7000000000 [384.0G] ---/--- SM=NUL ...(unallocated)
--->

It's doesn't work. Removed the Preferences folder but my last project won't open. Three day of work, I cannot believe.
Gianni