Hi,

since a short while I always get this error message when trying to calculate takeoff performance. It has worked before. Any way to get this fixed? Landing performance calculation is working btw.

Thanks

Hi,

Could you attach a screenshot of the issue mentioned above.

Thanks!

There you go.

23 hours ago, LowBee said:

There you go.

Thank you. Will do some testing on my end and report back!

@iniKyle any luck yet? I have the same issue for several weeks already (did not touch the plane since May).
MFS2024, v1.0.11 Premium

15 hours ago, Igrok-kun said:

@iniKyle any luck yet? I have the same issue for several weeks already (did not touch the plane since May).
MFS2024, v1.0.11 Premium

Hi,

I have not been able to replicate this issue on my end. Is it happening at every airport?

Thanks!

Affirm. Out of curiosity I have just tried another airport which I had never used with the A300F before (LIRN) and I got the same error mesage.

5 minutes ago, LowBee said:

Affirm. Out of curiosity I have just tried another airport which I had never used with the A300F before (LIRN) and I got the same error mesage.

Interesting. I will continue to test this on my end.

Just tested at LIRN and had no issue.

Thanks Kyle, I appreciate your help. Very strange, indeed.

I usually start with APU running, load the flight from Simbrief into EFB, load the a/c and wait until loading is finished. Then I import the flight, insert the SID and the load values und finally get back to the EFB to get the t/o performance data, which obviously is not working any more. I use the latest version and Navigraph data.

It might be helpful to know what exactly "Calculate>>" does.

3 hours ago, LowBee said:

Thanks Kyle, I appreciate your help. Very strange, indeed.

I usually start with APU running, load the flight from Simbrief into EFB, load the a/c and wait until loading is finished. Then I import the flight, insert the SID and the load values und finally get back to the EFB to get the t/o performance data, which obviously is not working any more. I use the latest version and Navigraph data.

It might be helpful to know what exactly "Calculate>>" does.

I'm wondering if there is another addon in your community folder causing issues.

If you're able, try the following troubleshooting steps.

• Make sure the simulator is completely closed.

• Locate your Community Folder.

• Rename your Community Folder to Community1.

• Relaunch the simulator. This should create a new Community folder.

• Once you reach the main menu, close the simulator.

• Move the A300 from Community1 into the newly created Community folder.

• Move whichever 2 sceneries you'd like to test at from Community1 to the newly created Community folder.

• Launch the simulator again.

  Let me know if that helps, thanks!

After creating a fresh community folder and a fresh fsuipc.ini had not helped, I finally found the culprit:

I had both the Premium and (still) the Compatible version installed. Deinstalling both addons and reinstalling the Premium version saved the day.

I suggest you guys add a remark on the website/iniManager like "Multiple installations not recommended" or so.

Thanks for supporting.

Edited October 18Oct 18 by LowBee

On 10/18/2026 at 7:23 AM, LowBee said:

After creating a fresh community folder and a fresh fsuipc.ini had not helped, I finally found the culprit:

I had both the Premium and (still) the Compatible version installed. Deinstalling both addons and reinstalling the Premium version saved the day.

I suggest you guys add a remark on the website/iniManager like "Multiple installations not recommended" or so.

Thanks for supporting.

I'm glad to hear you solved the issue. I have noted your suggestion and will forward to the team for further consideration.

Thanks!