Cheat Engine

[h3x1c]

To replicate, attach CE to a game the Mono Dissector will work with:

1: Open Dissect Mono.

2: Choose a method in any assembly and JIT it.

3: Right-click and select to toggle breakpoint on any instruction (which, in a real scenario, would be a meaningful instruction you'd want to break on).

4: Now right-click and toggle the breakpoint again to remove it (you could let the game break on the breakpoint, do whatever, then remove it as if you normally would; it's the general removing of the breakpoint that seems to cause the issue).

5: Now try to JIT either the same method or another.

When I do this, I get the following error:

Error:...gram Files (x86)\Cheat Engine 6.6\autorun\monoscript.lua:952: attempt to index a nil value (global 'monopipe')

If you close the Mono Dissect window and try to re-open it, it stays blank until you restart CE; however, if you restart CE, reattach it, run Mono Dissect, JIT a method, then toggle a breakpoint, it crashes my game.

This effectively means I have to restart the game and CE if I plan to do anything with Mono Dissect + JIT + utilize breakpoints.

[Dark Byte]

before you activate mono features try setting toggling a breakpoint anywhere on and of and then activate the mono features. (activating the debugger involves reopening the process)

also, the mono features are designed to not work as long as there are breakpoints active. This is because a breakpoint could hit while ce is waiting for a symbol, causing a deadlock. (the mono feature runs inside the target process and is affected by whatever happens to it, like a breakpoint freeze)

[h3x1c]

After I toggled the breakpoint on/off, trying to activate mono features resulted in a "Failure to launch" error; however, I tried again directly after closing the error message and it worked just fine. I probably just needed to wait a couple of seconds after toggling the breakpoint off before running Mono Dissect.

Thanks for the deets regarding how the mono features work, too. Very good to know!