topic Re: Developer registration may not be approved – Add-On works in Demo but not FULL in Archicad C++ API

Developer registration may not be approved – Add-On works in Demo but not FULL

ttt4 — Mon, 17 Aug 2026 03:56:24 GMT

Hello,

I registered as an Archicad API developer on August 3, 2026, but my Add-Ons are still rejected by the licensed FULL version of Archicad.

Two different Add-Ons with separately generated Local IDs show the following error:

“This Add-On cannot be validated. Please contact the distributor.”

Environment:
- Archicad 29.2.1, build 5101, JPN FULL
- API Development Kit 29.3100
- macOS 26.5.2
- Apple Silicon, arm64

I tested the exact same minimal Add-On bundle in Archicad Demo mode, and it loaded and ran successfully.

I have verified:
- The MDID resource is exactly 8 bytes
- Developer ID and Local ID match the API profile values
- arm64 architecture
- Info.plist
- Exported Archicad entry points
- Framework dependencies
- Hardened Runtime signature
- No duplicate MDID is loaded

The same bundle works in Demo mode but fails only in FULL mode. Two different Local IDs generated under the same developer account produce the same result.

I have also contacted archicadapi@graphisoft.com, but the issue has not yet been resolved.

Could a Graphisoft moderator please check whether my developer registration has been manually approved and activated?

I can provide my Developer ID and Local IDs privately if required.

Thank you.

Re: Developer registration may not be approved – Add-On works in Demo but not FULL

Tamas Polyak — Wed, 19 Aug 2026 11:52:39 GMT

Hi,

Please send me your developer and local IDs in a direct message so I can check it.

Regards,

Tamás

Re: Developer registration may not be approved – Add-On works in Demo but not FULL

ttt4 — Fri, 21 Aug 2026 06:54:54 GMT

Hello,

Thank you for confirming that the following pair is valid:

Developer ID: 913389903
Local ID: 3541969375

I created a new minimal Add-On using exactly this confirmed pair.

Before testing, I removed StructuralAutomationPrototype and every other Add-On using the same MDID. Only the new minimal test Add-On was registered.

However, Archicad 29.2.1 build 5101 JPN FULL still reports:

“This Add-On cannot be validated.”

The same exact bundle loads and runs successfully in Archicad Demo mode.

Embedded raw MDID bytes:
36 71 39 4F D3 1E 29 DF

The bundle is:
- arm64
- built with API DevKit 29.3100
- signed with Hardened Runtime
- verified successfully with codesign --deep --strict
- free of external third-party library dependencies

I have attached the exact minimal test bundle and screenshots from FULL and Demo mode.

Could you please test the attached bundle on your licensed Archicad installation and investigate why Archicad JPN FULL rejects the MDID pair that you confirmed as valid?

If it loads correctly on your system, could there be a validation issue related to Archicad 29.2.1 build 5101 JPN FULL or my Archicad license environment?

Thank you.