After starting FM 4.6.5 the first time with an existing slideshow and inserting 3 tiny .mov snippets: Crash.
Process: FotoMagico [6241]
Path: /Applications/FotoMagico.app/Contents/MacOS/FotoMagico
Identifier: com.boinx.FotoMagico4
Version: 4.6.5 (19855)
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: FotoMagico [6241]
User ID: 501
Date/Time: 2015-11-10 10:48:32.322 +0100
OS Version: Mac OS X 10.11.1 (15B42)
Report Version: 11
Anonymous UUID: D49F1CB2-78C9-9A49-0250-D7C64AF18E5A
Sleep/Wake UUID: A8A9FDCC-8A88-4C0D-B5C0-E9898DBE3D15
Time Awake Since Boot: 110000 seconds
Time Since Wake: 2200 seconds
System Integrity Protection: enabled
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_CRASH (SIGSEGV)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libsystem_kernel.dylib 0x00007fff95b58c96 mach_msg_trap + 10
1 libsystem_kernel.dylib 0x00007fff95b580d7 mach_msg + 55
2 com.apple.CoreFoundation 0x00007fff8fa332b4 __CFRunLoopServiceMachPort + 212
3 com.apple.CoreFoundation 0x00007fff8fa3277c __CFRunLoopRun + 1356
4 com.apple.CoreFoundation 0x00007fff8fa31fc8 CFRunLoopRunSpecific + 296
5 com.apple.HIToolbox 0x00007fff92862d55 RunCurrentEventLoopInMode + 235
6 com.apple.HIToolbox 0x00007fff92862b8f ReceiveNextEventCommon + 432
7 com.apple.HIToolbox 0x00007fff928629cf _BlockUntilNextEventMatchingListInModeWithFilter + 71
8 com.apple.AppKit 0x00007fff9a266d96 _DPSNextEvent + 1067
9 com.apple.AppKit 0x00007fff9a2661c5 -[NSApplication _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 454
10 com.apple.AppKit 0x00007fff9a25ad28 -[NSApplication run] + 682
11 com.apple.AppKit 0x00007fff9a223fbe NSApplicationMain + 1176
12 com.boinx.FotoMagico4 0x000000010f0f6dcc 0x10f0f4000 + 11724
13 libdyld.dylib 0x00007fff8e5b65ad start + 1