Error [Launcher] Graphics patch error: unexpected byte

[thisguyrob]

macOS when I try to launch using the mcpelauncher executable I always get this error. full dump is:

sh /Users/thisguyrob/Downloads/mcpelauncher/build/start_mcpelauncher.sh
18:22:36 Trace [Launcher] Loading native libraries
18:22:36 Trace [Launcher] Loaded OS library /Users/robfalk/Downloads/mcpelauncher/libs/native/libfmod.dylib
18:22:36 Trace [Launcher] Loaded OS library libm.dylib
18:22:36 Trace [Launcher] Loading hybris libraries
18:22:36 Trace [Launcher] Loading Minecraft library
18:22:38 Info [Launcher] Loaded Minecraft library
18:22:38 Debug [Launcher] Minecraft is at offset 0x413000
18:22:38 Info [Launcher] Applying patches
18:22:38 Trace [Launcher] Patching - original: 85 83 87 86 131
18:22:38 Trace [Launcher] Patching - result: 233 107 125 241 254
18:22:38 Trace [Launcher] Patching - original: 85 83 87 86 131
18:22:38 Trace [Launcher] Patching - result: 233 251 82 242 254
18:22:38 Trace [Launcher] Patching - original: 85 83 87 86 129
18:22:38 Trace [Launcher] Patching - result: 233 139 80 242 254
18:22:38 Trace [Launcher] Patching - original: 83 87 86 131 236
18:22:38 Trace [Launcher] Patching - result: 233 91 81 242 254
18:22:38 Trace [Launcher] Patching - original: 85 83 87 86 129
18:22:38 Trace [Launcher] Patching - result: 233 59 85 213 252
18:22:38 Trace [Launcher] Patching - original: 85 83 87 86 129
18:22:38 Trace [Launcher] Patching - result: 233 59 114 14 253
18:22:38 Trace [Launcher] Patching - original: 85 83 87 86 129
18:22:38 Trace [Launcher] Patching - result: 233 75 136 14 253
18:22:38 Trace [Launcher] Patching - original: 85 83 87 86 129
18:22:38 Trace [Launcher] Patching - result: 233 91 123 14 253
18:22:38 Trace [Launcher] Patching - original: 85 83 87 86 129
18:22:38 Trace [Launcher] Patching - result: 233 27 239 13 253
18:22:38 Trace [Launcher] Patching - original: 85 83 87 86 129
18:22:38 Trace [Launcher] Patching - result: 233 171 18 14 253
18:22:38 Trace [Launcher] Patching - original: 85 83 87 86 129
18:22:38 Trace [Launcher] Patching - result: 233 107 247 15 253
18:22:38 Trace [Launcher] Patching - original: 83 87 86 131 236
18:22:38 Trace [Launcher] Patching - result: 233 219 165 14 253
18:22:38 Trace [Launcher] Patching - original: 85 83 87 86 129
18:22:38 Trace [Launcher] Patching - result: 233 187 195 14 253
18:22:38 Error [Launcher] Graphics patch error: unexpected byte

any ideas?