Tried it on single player as well as trying it as a client side for a vanilla server and it crashed that as well, so isn't working. I've got 1.13.2 and the rift version for that. Tried it with all other mods disabled as well. Crash log says:
Caused by: java.lang.VerifyError: Bad type on operand stackCaused by: java.lang.VerifyError: Bad type on operand stackException Details: Location: fr/atesab/horsedebug/HorseDebugMain.renderOverlay()V @56: invokevirtual Reason: Type 'akk' (current frame, stack[5]) is not assignable to 'aex' Current Frame: bci: @56 flags: { } locals: { 'fr/atesab/horsedebug/HorseDebugMain', 'cfi', 'cfs', 'akk' } stack: { 'fr/atesab/horsedebug/HorseDebugMain', 'cfi', integer, integer, 'fr/atesab/horsedebug/HorseDebugMain', 'akk' } Bytecode: 0x0000000: b801 594c 2bb4 015d b401 629a 0004 b12b 0x0000010: b400 774d 2bb4 0165 b601 6bc1 00ba 9900 0x0000020: 242b b401 65b6 016b c000 ba4e 2a2b 2cb6 0x0000030: 007d 2cb6 0080 2a2d b601 6d2d b601 6fa7 0x0000040: 0042 2bb4 0172 4e2d c600 392d b401 75b2 0x0000050: 0177 b601 7a99 002c 2db4 017d c100 a999 0x0000060: 0022 2a2b 2cb6 007d 2cb6 0080 2a2d b401 0x0000070: 7dc0 00a9 b601 6d2d b401 7dc0 00a9 b601 0x0000080: 6fb1 Stackmap Table: append_frame(@15,Object[#103]) append_frame(@66,Object[#121]) same_frame(@129)
at fr.atesab.horsedebug.RiftHorseDebug.(RiftHorseDebug.java:10) ... 27 more