Codex is not running any instructions

Question

### What version of Codex is running?

v0.69.0

### What subscription do you have?

pro

### Which model were you using?

gpt-5.1-codex-max xhigh

### What platform is your computer?

Darwin 25.1.0 arm64 arm

### What issue are you seeing?

Any instruction I am passed in to codex I am getting the same message `{"detail":"Instructions are not valid"}` returned

### What steps can reproduce the bug?

Uploaded thread: 019b0a73-0311-7163-8237-3da280256c01

### What is the expected behavior?

_No re