Crack the Pack Crash Fix: JSON Error and Launch Solutions

Players jumping into Doigt's card-opening incremental game, Crack the Pack, may occasionally experience startup failures and critical crashes. The most common technical issue prevents the application from launching entirely, halting your progress toward opening boosters, running the Fusion Lab, and collecting the 1,001 available cards.

Here is an overview of the known crash causes, the developer's official troubleshooting guidance, and how to verify your installation.

Understanding the Crack the Pack Critical Crash

The primary crash reported by players in the Steam Community forums manifests as a GameMaker script failure right when the game starts. When this happens, a crash window appears with the following error information:

ERROR in action number 1 of Create Event for object undefined: JSON parse error : unexpected end of data at gml_Script_json_load gml_GlobalScript_scrFiles

This error occurs when the game engine attempts to read its required data files—such as databases or local configuration files—and finds empty or corrupted text data. Because the script encounters an "unexpected end of data," the launch routine halts, and the game terminates.

Players encountering this bug noted that running a standard Steam integrity check or reinstalling the title directly did not always resolve the error.

Official Troubleshooting: Checking Local JSON Files

In response to the critical crash thread on the Steam forums, developer Doigt pointed toward inspecting the local installation directory to verify whether core data files are missing or incomplete.

To inspect your local files, follow these steps:

1. Open your Steam client and go to your Steam Library.
2. Locate Crack the Pack in your game list.
3. Right-click on the game title and select Manage, then click Browse local files.
4. Review the folder contents to check for essential JSON files, such as game_stats.json and boosters_database.json.

If these JSON files are missing, empty (showing a file size of 0 KB), or partially written due to an abrupt shutdown, the script will trigger the crash upon startup. Deleting empty or zero-byte configuration files before re-verifying file integrity through Steam allows the game to redownload fresh, uncorrupted copies.

Save Retention and Progress Issues

On the Steam Community discussion boards, several player threads highlight related topics, including "Not Able to Retain Saves?" and "Game crashed and lost alot of progress."

Because the game constantly handles thousands of card calculations, upgrade tiers, and booster openings, abrupt terminations can corrupt active save files. If your game crashes while writing data, the save file may end prematurely, causing the exact "unexpected end of data" error described above. Keeping regular manual backups of your local save data can prevent permanent loss if a critical failure occurs.

Crack the Pack System Requirements

Before troubleshooting game files further, verify that your computer meets the official minimum system specifications listed on Steam:

While the game is lightweight and demands minimal storage and memory, running on an operating system without proper 64-bit architecture or adequate OpenGL 3+ driver support can lead to rendering issues and launch failures.

Frequently Asked Questions

Does verifying file integrity in Steam fix the crash?

For some players, verifying files alone did not fix the problem if a corrupted, empty save file remained in the directory. You must ensure corrupted zero-byte files are removed before verifying.

Which files did the developer ask players to check?

Developer Doigt specifically asked affected players to check their game folder for files such as game_stats.json and boosters_database.json.

Where can I report persistent crashes to the developer?

If your crash persists after checking local files, post the exact error message and details in the official Crack the Pack Steam Community discussion forum.