substring not found

[fr0zenrain]

Executing action: lucid:view_microcode (View microcode)
Traceback (most recent call last):
File "C:/Program Files/IDA_Pro_v7.5_Portable/plugins\lucid\util\ida.py", line 51, in activate
self.action_function(ctx)
File "C:/Program Files/IDA_Pro_v7.5_Portable/plugins\lucid\core.py", line 119, in interactive_view_microcode
self.explorer.show(current_address)
File "C:/Program Files/IDA_Pro_v7.5_Portable/plugins\lucid\ui\explorer.py", line 48, in show
self.select_function(address)
File "C:/Program Files/IDA_Pro_v7.5_Portable/plugins\lucid\ui\explorer.py", line 98, in select_function
mtext = MicrocodeText(mba, self.model.verbose)
File "C:/Program Files/IDA_Pro_v7.5_Portable/plugins\lucid\microtext.py", line 463, in init
self.refresh()
File "C:/Program Files/IDA_Pro_v7.5_Portable/plugins\lucid\microtext.py", line 471, in refresh
self._generate_from_mba()
File "C:/Program Files/IDA_Pro_v7.5_Portable/plugins\lucid\microtext.py", line 483, in _generate_from_mba
blk_token = MicroBlockText(blk, self.verbose)
File "C:/Program Files/IDA_Pro_v7.5_Portable/plugins\lucid\microtext.py", line 275, in init
self.refresh()
File "C:/Program Files/IDA_Pro_v7.5_Portable/plugins\lucid\microtext.py", line 283, in refresh
self._generate_from_blk()
File "C:/Program Files/IDA_Pro_v7.5_Portable/plugins\lucid\microtext.py", line 298, in _generate_from_blk
insn_token = MicroInstructionToken(insn, insn_idx, self)
File "C:/Program Files/IDA_Pro_v7.5_Portable/plugins\lucid\microtext.py", line 166, in init
self._generate_from_insn()
File "C:/Program Files/IDA_Pro_v7.5_Portable/plugins\lucid\microtext.py", line 177, in _generate_from_insn
self._create_subop(mop)
File "C:/Program Files/IDA_Pro_v7.5_Portable/plugins\lucid\microtext.py", line 191, in _create_subop
subop = MicroOperandToken(mop, parent=self)
File "C:/Program Files/IDA_Pro_v7.5_Portable/plugins\lucid\microtext.py", line 100, in init
self._generate_from_op()
File "C:/Program Files/IDA_Pro_v7.5_Portable/plugins\lucid\microtext.py", line 112, in _generate_from_op
self._create_subop(mop.d.r)
File "C:/Program Files/IDA_Pro_v7.5_Portable/plugins\lucid\microtext.py", line 147, in _create_subop
subop = MicroOperandToken(mop, parent=self)
File "C:/Program Files/IDA_Pro_v7.5_Portable/plugins\lucid\microtext.py", line 101, in init
self._generate_token_ranges()
File "C:/Program Files/IDA_Pro_v7.5_Portable/plugins\lucid\text.py", line 92, in _generate_token_ranges
token_index = self.text[parsing_offset:].index(token.text)
ValueError: substring not found

[funlennysub]

also happens on ida 7.7 with 3.9 python when trying to view microcode for a large function

Traceback (most recent call last):
  File "/plugins\lucid\util\ida.py", line 51, in activate
    self.action_function(ctx)
  File "/plugins\lucid\core.py", line 118, in interactive_view_microcode
    self.explorer = MicrocodeExplorer()
  File "/plugins\lucid\ui\explorer.py", line 40, in __init__
    self.view._code_sync.enable_sync(True) # XXX/HACK
  File "/plugins\lucid\ui\sync.py", line 84, in enable_sync
    self._sync_microtext(self._last_vdui)
  File "/plugins\lucid\ui\sync.py", line 319, in _sync_microtext
    self.controller.select_function(vdui.cfunc.entry_ea)
  File "/plugins\lucid\ui\explorer.py", line 98, in select_function
    mtext = MicrocodeText(mba, self.model.verbose)
  File "/plugins\lucid\microtext.py", line 463, in __init__
    self.refresh()
  File "/plugins\lucid\microtext.py", line 471, in refresh
    self._generate_from_mba()
  File "/plugins\lucid\microtext.py", line 483, in _generate_from_mba
    blk_token = MicroBlockText(blk, self.verbose)
  File "/plugins\lucid\microtext.py", line 275, in __init__
    self.refresh()
  File "/plugins\lucid\microtext.py", line 283, in refresh
    self._generate_from_blk()
  File "/plugins\lucid\microtext.py", line 298, in _generate_from_blk
    insn_token = MicroInstructionToken(insn, insn_idx, self)
  File "/plugins\lucid\microtext.py", line 166, in __init__
    self._generate_from_insn()
  File "/plugins\lucid\microtext.py", line 177, in _generate_from_insn
    self._create_subop(mop)
  File "/plugins\lucid\microtext.py", line 191, in _create_subop
    subop = MicroOperandToken(mop, parent=self)
  File "/plugins\lucid\microtext.py", line 101, in __init__
    self._generate_token_ranges()
  File "/plugins\lucid\text.py", line 92, in _generate_token_ranges
    token_index = self.text[parsing_offset:].index(token.text)
ValueError: substring not found

[Fireboyd78]

I ran into this same issue - here was the fix that worked for me:

# lucid/text.py, ~line 84
def _generate_token_ranges(self):
	"""
	Generate the text span indexes (start:end) for each child token.
	"""
	token_ranges = []
	parsing_offset = 0

	for token in self.items:
		token_index = self.text[parsing_offset:].index(token.text)
		token_start = parsing_offset + token_index
		token_end = token_start + len(token.text)
		token_ranges.append((range(token_start, token_end), token))
		
		if token_start > 2 and self.text.find(',', parsing_offset, token_start) > parsing_offset:
			continue
					
		parsing_offset = token_end
		

	self._token_ranges = token_ranges