Fresh install (never had Illustrator nor Photoshop on this Mac), on OSX 10.12.6. Downloaded and installed okay, both Illustrator and Photoshop, but neither of them successfully launch. Both abort out before the splash screen appears with an uncaught exception.

Process: Adobe Illustrator [14804]
Path: /Applications/Adobe Illustrator CC 2017/Adobe Illustrator.app/Contents/MacOS/Adobe Illustrator
Identifier: com.adobe.illustrator
Version: 21.1.0 (21.1.0)
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: Adobe Illustrator [14804]
User ID: 501

Date/Time: 2017-10-05 01:51:31.953 -0700
OS Version: Mac OS X 10.12.6 (16G29)
Report Version: 12
Anonymous UUID: 40DDCD81-AFE5-EA6C-1264-9E93FDB1C6EA

Time Awake Since Boot: 680000 seconds

System Integrity Protection: enabled

Crashed Thread: 0 Dispatch queue: com.apple.main-thread

Exception Type: EXCCRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note: EXCCORPSE_NOTIFY

Application Specific Information:
/Applications/Adobe Illustrator CC 2017/Adobe Illustrator.app/Contents/MacOS/../Frameworks/AdobePDFSettings.framework/Versions/A/AdobePDFSettings
terminating with uncaught exception of type devtech_private::OSStatusException
abort() called

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libsystemkernel.dylib 0x00007fff98147d42 _pthreadkill + 10
1 libsystempthread.dylib 0x00007fff98235457 pthreadkill + 90
2 libsystemc.dylib 0x00007fff980ad420 abort + 129
3 libc++abi.dylib 0x00007fff96c0094a abortmessage + 266
4 libc++abi.dylib 0x00007fff96c25c2f defaultterminatehandler() + 267
5 libobjc.A.dylib 0x00007fff97735713 _objcterminate() + 124
6 libc++abi.dylib 0x00007fff96c22d49 std::terminate(void ()()) + 8
7 libc++abi.dylib 0x00007fff96c227be _cxathrow + 121
8 com.adobe.PDFSettings 0x00000001095968e5 devtechprivate::ToUnicode::ToUnicode() + 97
9 com.adobe.PDFSettings 0x0000000109596a00 devtechprivate::UnicodeConversion::ToUnicodeSize(unsigned char const, unsigned long, unsigned long, EncodingInfo) + 36
10 com.adobe.PDFSettings 0x0000000109596224 devtechprivate::UnicodeUtil::ToUnicodeSize(unsigned char const, unsigned long, EncodingInfo) + 30
11 com.adobe.PDFSettings 0x0000000109596287 devtechprivate::UnicodeUtil::StringToUnicode(unsigned char const, unsigned long, devtech_private::Buffer<unsigned short>&, EncodingInfo) + 45
12 com.adobe.PDFSettings 0x0000000109596525 devtech_private::ZString::StringToPooledUnicode(unsigned char const, unsigned long, devtech::EncodingInfo) + 107
13 com.adobe.PDFSettings 0x0000000109596674 _GLOBALIa + 84
14 dyld 0x00000001021c2a1b ImageLoaderMachO::doModInitFunctions(ImageLoader::LinkContext const&) + 385
15 dyld 0x00000001021c2c1e ImageLoaderMachO::doInitialization(ImageLoader::LinkContext const&) + 40
16 dyld 0x00000001021be4aa ImageLoader::recursiveInitialization(ImageLoader::LinkContext const&, unsigned int, char const, ImageLoader::InitializerTimingList&, ImageLoader::UninitedUpwards&) + 338
17 dyld 0x00000001021be441 ImageLoader::recursiveInitialization(ImageLoader::LinkContext const&, unsigned int, char const, ImageLoader::InitializerTimingList&, ImageLoader::UninitedUpwards&) + 233
18 dyld 0x00000001021bd524 ImageLoader::processInitializers(ImageLoader::LinkContext const&, unsigned int, ImageLoader::InitializerTimingList&, ImageLoader::UninitedUpwards&) + 138
19 dyld 0x00000001021bd5b9 ImageLoader::runInitializers(ImageLoader::LinkContext const&, ImageLoader::InitializerTimingList&) + 75
20 dyld 0x00000001021af47a dyld::initializeMainExecutable() + 195
21 dyld 0x00000001021b38c6 dyld::main(machoheader const, unsigned long, int, char const, char const, char const, unsigned long) + 3966
22 dyld 0x00000001021ae249 dyldbootstrap::start(machoheader const, int, char const, long, macho_header const, unsigned long*) + 470
23 dyld 0x00000001021ae036 dyldstart + 54