Bug when trying to use MAJOR in JAMOVI

[jbr86]

Describe the bug
Hello Matt,
I have a problem with the MAJOR module of JAMOVI. I am using a MacBook Air with the Apple M3 chip and JAMOVI version 2.6.44.0. When I try to do a meta-analysis with JAMOVI using MAJOR for dichotomous models and proportions.
When entering all relevant variables ending with the study names of the studies, I read the following message, 'The condition length >1' which blocks the analysis. I saw on the Internet that I was not the only one to observe this bug. I am attaching the JAMOVI database (JAM 1) so that you can test it for yourself. Of note, another type of meta-analysis using correlation coefficients normally works (JAM 2). Can you guide me or correct this bug. Performing meta-analyses is a frequently used tool in biostatistics.
Kind regards,
Jean-Baptiste Ricco, MD, PhD from France.

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Prof. Jean-Baptiste Ricco, MD, PhD
Académie Nationale de Médecine
Past President ESVS
Email: jeanbaptistericco@gmail.com
Mobile: +33607155726

To Reproduce
see the screenshot uploaded below

Data Set

• see dataset (JAMOVI file)

[github-actions]

If you dont get a reply from me in a couple days comment on this issue so Ill see it' first issue

[jrobinsonTU]

Just to update, I am experiencing the same issue.

As a workaround, I’ve noticed that this does not occur with an older version of Jamovi. I am using Jamovi version 2.3.28.0 (legacy).

I don’t know if this means I am losing any functionality or outputs, but it works. I hope that helps.

[jbr86]

Dear Kyle, Thank you so much for your help! I have downloaded Jamovi 2.3.28.0. Obviously, when using this old version, we lose access to many recent ads, but we can have both versions and switch from the old 2.3.28.0 to the new one. I will try again to use MAJOR with JAMOVI 2.3.28.0. Could you send me a demo JAMOVI file and the way to proceed with MAJOR? I must say I forgot the path to follow. Kind regards, Jean-Baptiste

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_______________________________________________ Jean-Baptiste RICCO, MD, PhD, FEBVS Professeur de Médecine Émérite Académie Nationale de Médecine Commandeur de la Légion d'Honneur Email: ***@***.*** Mobile: +33607155726

On 24 Nov 2025, at 11:14, jrobinsonTU ***@***.***> wrote: jrobinsonTU left a comment (kylehamilton/MAJOR#35) <#35 (comment)> Just to update, I am experiencing the same issue. As a workaround, I’ve noticed that this does not occur with an older version of Jamovi. I am using Jamovi version 2.3.28.0 (legacy). I don’t know if this means I am losing any functionality or outputs, but it works. I hope that helps. — Reply to this email directly, view it on GitHub <#35 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/APNNUAZBPF3NTX53BWPMT5T36LK6RAVCNFSM6AAAAAB3GJIHZGVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZTKNRZHEZDSMJYGE>. You are receiving this because you authored the thread.

[jrobinsonTU]

Just to update, this error is still occurring - and the workaround (using it with an older version) is still the only viable way to use this module.

[jbr86]

Thank you for your follow-up on this matter. It is a pity that MAJOR is still not running. Best wishes, Jean-Baptiste

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_______________________________________________ Jean-Baptiste RICCO, MD, PhD, FEBVS Professeur Émérite des Universités Membre Titulaire de l'Académie Nationale de Médecine Email: ***@***.*** Mobile: +33607155726

On 30 May 2026, at 14:34, jrobinsonTU ***@***.***> wrote: jrobinsonTU left a comment (kylehamilton/MAJOR#35) <#35 (comment)> Just to update, this error is still occurring - and the workaround (using it with an older version) is still the only viable way to use this module. — Reply to this email directly, view it on GitHub <#35?email_source=notifications&email_token=APNNUA6JG32MGYY7PQETKBT45LILTA5CNFSNUABFM5UWIORPF5TWS5BNNB2WEL2JONZXKZKDN5WW2ZLOOQXTINJYGI4DENJUG442M4TFMFZW63VGMF2XI2DPOKSWK5TFNZ2KYZTPN52GK4S7MNWGSY3L#issuecomment-4582825479>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/APNNUAYFXWVAP34UDSB4OYT45LILTAVCNFSM6AAAAACZTUHVMOVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHM2DKOBSHAZDKNBXHE>. Triage notifications, keep track of coding agent tasks and review pull requests on the go with GitHub Mobile for iOS <https://github.com/notifications/mobile/ios/APNNUA2K4PU57LZTLHRHIND45LILTA5CNFSNUABFM5UWIORPF5TWS5BNNB2WEL2JONZXKZKDN5WW2ZLOOQXTINJYGI4DENJUG442M4TFMFZW63VGMF2XI2DPOKSWK5TFNZ2KUZTPN52GK4S7NFXXG> and Android <https://github.com/notifications/mobile/android/APNNUA4U4HEY66OQD5U3GHL45LILTA5CNFSNUABFM5UWIORPF5TWS5BNNB2WEL2JONZXKZKDN5WW2ZLOOQXTINJYGI4DENJUG442M4TFMFZW63VGMF2XI2DPOKSWK5TFNZ2K4ZTPN52GK4S7MFXGI4TPNFSA>. Download it today! You are receiving this because you authored the thread.