Check a loaded backpack for items that cannot exist and report every problem

After an update removes or renames an item, old saves can hold things the game no longer knows, or stacks bigger than allowed. This entry shows how to find all such problems in one pass instead of crashing on the first, including one odd item name that fools many checks.

Why this works

Updates change the rules while old saves keep the old facts, so a loaded backpack can hold things the game no longer understands. Collecting every problem as a readable line, not stopping at the first, lets a person fix them in one go and lets the game decide calmly what to repair.

When not to use it

Skip it for a game whose backpack never changes between versions and has no limits to break, since a check then only adds code. If saves must also be safe from deliberate edits, check on your own server, not just when the game loads.

In the full entry

• What to build, step by step
• Starting values and the reason for each
• 3 common mistakes and the fix
• 23 lines of example code with 3 checks that pass
• How your AI shows you that it works

Say this to your AI

Use the Spielerando entry "Check a loaded backpack for items that cannot exist and report every problem" (read_entry inventory-save-validator-all-problems) in my game. Build it step by step, and show me how you checked that it works.

Or skip this and connect the MCP: your AI then finds all of this by itself.Connect the MCP