Archicad 27 causes Archicad 26 to crash?

[furtonb]

Hi, 

I'm facing the following issue, but I don't know if it is specific to my machine: I made the curious conclusion, that Archicad 27 being open causes Archicad 26 instances to crash instantly when being switched to.

It doesn't matter whether it is a teamwork or single file, if I open AC27 and switch back to any of my AC26 projects, the active AC26 instance instantly dies.

Steps to reproduce:

1. Have any AC26 file open

2. Open any AC27 file

3. Have the AC26 window active again

4. Enjoy

Anyone else experiencing this? This is really annoying, as I often have older/other currently running projects which I would like to reference, and this issue makes this impossible.

SW: macOS Ventura 13.5.2 (22G91) with AC27 INT b4001 and AC26 INT b5003

HW: M1 Max MBP (64 GB + 24c)

[MRADesign123]

Hi,

Currently having a similar issue. Archicad 26 will open but crashes eventually even if AC27 isn't running. The install of AC27 must be interfering with AC26 running somehow.

I'm still using 26 until I upgrade CI Tools but noticed this was happening after installing AC27.

Generally once I have the latest Archicad installed I delete the previous versions altogether.

If your libraries are replicated correctly you shouldn't need to open older jobs in AC26.......?

[furtonb]

Hi, Since I've updated AC27 to build 4030, I'm getting this problem infrequently.

Which build are you on? I've also toyed with the idea of updating the OS to Sonoma, but I don't know what can of worms that would open, so I haven't done it.

Yes, you can migrate all your projects to 27 - in my case this is not an option for all jobs.

[furtonb]

It's been a while since I noticed this happening, but today I got a crash again:

- Opening an AC27 (4060 INT) file (.pln) made AC26 (5003 INT) crash (Teamwork file)

Bug report ID: AC26-2024-02-13-06-10-49-6929

[Lee Hankins]

I think there is a newer update to Archicad 26 that prevents this from happening? AC26 is on build 6XXX.

[furtonb]

Teamwork project, close to a deadline – I cannot update atm.

[MRADesign123]

Completed the AC26 update. 

No more crashing.