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Unfortunately they seem to have straight up broken Claude Code either with this release in the backend or the new CC version. Errors about "can't modify thinking blocks" are bricking long-running sessions: https://github.com/anthropics/claude-code/issues?q=is%3Aissu...

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This was happening even on the `stable` branch with 4.7

I managed to get claude to create a recovery script to un-brick sessions, YMMV

https://gist.github.com/robertfw/993dbe8643c4fbdf12005dff2ec...

That is part of the charm of working with Claude. Every time they release anything new - all your shit will break.

In case it helps anyone, in some minor cases I was able to recover and continue with /rewind.

They don't test CC updates before release. The testing is done by their own team using the product or public feedback.

Same. It's not a good look to have happen right when they roll out a new model.

I found that quitting and restarting cc appears to fix this

Codex cli> claude code

Try updating maybe?

I just installed/upgraded to try out 4.8 and in only 3 messages I hit this bug! Seems something is broken on CC.

I'm on the latest version (2.1.154 as of this comment). Based on the timestamps on those Issues being reported I think it's happening on the latest version.

I'm sure it will get fixed eventually/soon, just annoying to update and have your workflow break.

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