Environment
- Surface: Web
- Browser or app version: Latest Web Version
- Affected feature and model, if relevant: Python, Zip
Bug
Working with ChatGPT Premium on Reverse Engineering something
Chat me:
ok, i got another session made, can you decompile them now or does this still not work? if it does not work, whats causing it, and can you fix it or do we need to make a new chat?
ChatGPT:
Worked for 4m 25s
Analysis paused
Analysis errored
Analysis errored
It still does not work in this chat, but I can now pin down the cause much more confidently.
Your new upload itself arrived correctly: redacted_capture(20260927-024126).zip is 91,567,357 bytes. The failure is not currently evidence of a corrupt ZIP.
I tested three things:
- opening the exact mounted ZIP path with Python → ClientError
- opening it through the container runtime → ClientError
- running the completely unrelated Python command print(“hello”) → the same ClientError
So the problem is the code-execution sandbox for this conversation, not ZIP decompression, not zipfile, and not your capture. The execution environment is failing before my code even starts.
Can I fix it here?
Unfortunately I don’t have a control that restarts or resets this chat’s execution sandbox. We’ve now seen the same failure repeatedly across many turns, so I would start a new chat. That should give us a fresh Python/container runtime and is the best chance of clearing it.
You do not need to redo the live-server capture.
In the new chat:
- Upload redacted_capture(20260927-024126).zip.
- Tell me:
Continue my redacted-server reverse-engineering project. The previous chat’s Python/container sandbox was broken with ClientError even on print(“hello”). Please first test this ZIP with zipfile.testzip(), list/extract it, then analyze/decode the new live-server session. We are currently at Stage28 after completing the 179-recipe census.
so i opened a completely new Chat and Uploaded my Files, but i get this:
Worked for 4m 11s
Analysis errored
Analysis errored
The problem is still the execution environment, not evidence of a bad ZIP. I tried the normal container, private Python, and the separate visible Python runtime. All three currently fail with
ClientErroreven on a trivial command. The file service can store/read the ZIP itself but does not expose files inside a ZIP, so I cannot honestly claim any packet findings from030445yet.
Reproduction
Steps or a minimal example prompt:
Asking ChatGPT to unpack a few *.ZIP Files and Examine Python Scripts and Java Files, but it seems ChatGPT’s Python is completely Broken, he cant even unpack the ZIP Files.
Diagnostics
Exact error or screenshot:
print(“python-ok”)
import os, zipfile, json, pathlib, re, struct, hashlib, collections, statistics
paths = [
“/mnt/data/Pasted text(20260927-030017).txt”,
“/mnt/data/bin(1).zip”,
“/mnt/data/redacted(3).zip”,
“/mnt/data/redacted_capture(20260927-030445).zip”
]
[(p, os.path.exists(p), os.path.getsize(p) if os.path.exists(p) else None) for p in paths]Encountered exception: <class ‘caas.internal.errors.ClientError’>.
from pathlib import Path
import zipfile, os, json, hashlib, collections, re, structpaths = [
Path(“/mnt/data/recovered_uploads/redacted_capture(20260927-030445).zip”),
Path(“/mnt/data/recovered_uploads/bin(1).zip”),
Path(“/mnt/data/recovered_uploads/redacted(3).zip”),
]
print(“visible-python-ok”)
for p in paths:
print(“\nZIP:”, p.name, “exists=”, p.exists(), “size=”, p.stat().st_size if p.exists() else None)
if p.exists():
with zipfile.ZipFile(p) as z:
print(" testzip:“, z.testzip())
print(” entries:“, len(z.infolist()))
for zi in z.infolist()[:40]:
print(f” {zi.file_size:10d} {zi.filename}“)
if len(z.infolist()) > 40:
print(” …")Encountered exception: <class ‘caas.internal.errors.ClientError’>.
When it happened (with timezone) and how often: 05:21 Sunday, 27 September 2026 (CEST), on 2 Different Chats