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My precheck is still throwing exceptions. Ever since submission day. Is anyone else having the same problem?

Not that I'm aware of.  What sort of exceptions are you getting?

I've just run it again actually and for the first time it has got past the xor checks and is now failing instead

<@U016EM8L91B> I never got this error before `XOR Checks on GDS Failed, Reason: Top cell name user_analog_project_wrapper not found.` when just replacing the GDS.

No, it's not too late to fix anything.  Is your top level cell name not "user_analog_project_wrapper"?

my top-level mag file is called `user_analog_project_wrapper` yes and it's in `columbus/ip/top/lay/`. what i've been doing (which has always passed the prechecker up until now) is generating the GDS from that and copying it into `gds/`.  I've also just copied my `user_analog_project_wrapper.mag` out of `columbus/ip/top/lay/` into `mag/` but it's still complaining that it can't find the top-level cell.  I was under the impression we just needed to replace the gds no?

Should I copy a flattened version of my top level wrapper into the mag folder to fix this?

What does this mean Tim `XOR Checks on GDS Failed, Reason: Top cell name user_analog_project_wrapper not found.` I have a `mag/user_analog_project_wrapper.mag` and a `gds/user_analog_project_wrapper.gds` so I'm not sure what it's complaining about.  I'm not doing anything differently from all the times I've had passes as far as I'm aware.

If I do `strings user_analog_project_wrapper.gds | grep user_analog_project_wrapper`  what I get back is `user_analog_project_wrapper_flat`.

oh! ok ill sort that out.  I now understand - thanks

I made the changes to correct the cell name and I just got this:
```[06/26/21 12:41:41 PDT] EXCEPTION
Script error code: 254```
but I'm running it again in case it was a glitch

Looks like i got the same thing again.  Do you know what exception code 254 means Tim?

<@U016EM8L91B>, do you know what `Script error code: 254` means?