What makes Custom Ribbon callbacks stop working - excel

Question

I have developed an excel Add-Ins which contains additional buttons with different function. My initial code was based on "Ron de Bruin Excel Automation" kit which worked great. (and I thank him for that). Recently I have added another group and a button, which worked fine on my excel (365 Excel version 2009), but failed on other machines with the same Excel version. The error was, it could not find any callbacks. I eliminated all callbacks but one "onAction" which is essential, but the error is still there.
Any help.
<customUI xmlns="http://schemas.microsoft.com/office/2006/01/customui">
<ribbon>
<tabs>
<tab id="CustomTab" label="שמאות מקרקעין" insertAfterMso="TabDeveloper">
<group id="GroupA" label="מידע נדלן רשות המיסים">
<button id="aButton01" label="יבא נתונים" onAction="RunMacro" imageMso="GetExternalDataImportClassic" size="large" />
<button id="aButton02" label="מזג גיליונות" onAction="RunMacro" imageMso="ReviewCombineRevisions" size="large" />
<button id="aButton03" label="מיין ומחק עמודות" onAction="RunMacro" imageMso="CreateQueryFromWizard" size="large" />
<button id="aButton04" label="שווי מר" onAction="RunMacro" imageMso="ConditionalFormattingAboveAverage" size="large" />
<button id="aButton05" label="התאמת משקל" onAction="RunMacro" imageMso="PageScaleToFitScale" size="large" />
<button id="aButton06" label="הכנה לדוח שומה" onAction="RunMacro" imageMso="MacroDefault" size="large" />
<button id="aButton07" label="תמונת הנכס" onAction="RunMacro" imageMso="PictureReflectionGallery" size="large" />
<button id="aButton08" label="וויסות הורדה אפשרויות" onAction="RunMacro" imageMso="StartTimer" size="large" />
<button id="aButton09" label="מחיר למשתכן" onAction="RunMacro" imageMso="TentativeAcceptInvitation" size="large" />
</group>
<group id="GroupB" label="תכנה">
<button id="bButton01" label="הוראות שימוש" onAction="RunMacro" imageMso="Help" size="large" />
<button id="bButton02" label="הזמנת רישיון" onAction="RunMacro" imageMso="GroupOmsInsert" size="large" />
<button id="bButton03" label="עידכון גירסה" onAction="RunMacro" imageMso="FillUp" size="large" />
<button id="bButton04" label="נתוני משתמש" onAction="RunMacro" imageMso="ArrangeByAccount" size="large" />
</group>
<group id="GroupC" label="נסח טאבו">
<button id="cButton01" label="PDF" onAction="RunMacro" imageMso="FileEmailAsPdfEmailAttachment" size="large" />
</group>
</tab>
</tabs>
</ribbon>
</customUI>
{
Sub RunMacro(control As IRibbonControl)
'PURPOSE: Tell each button which macro subroutine to run when clicked
Select Case control.ID
Case "aButton01": Application.Run "FromRibbon"
Case "aButton02": Application.Run "MergeSheetsmacro"
Case "aButton03": Application.Run "CleanColumns"
Case "aButton04": Application.Run "AddAverage"
Case "aButton05": Application.Run "Weight"
Case "aButton06": Application.Run "PrepareReport"
Case "aButton07": Application.Run "ActivateGoogleView"
Case "aButton08": Application.Run "GrabRegul"
Case "aButton09": Application.Run "MechirLamishtaken"
Case "bButton01": Application.Run "HelpForm"
Case "bButton02": Application.Run "LicenseRequest"
Case "bButton03": Application.Run "UpgradeVersion"
Case "bButton04": Application.Run "PersonalData"
Case "cButton01": Application.Run "ConvertPDF2Excel"
End Select
End Sub
}
enter code here

Answer 1

After a long trial an error process I found the reason to the effect . 64 bit vs. ,32 bit Office .
I have used some dll functions which were not properly defined for 64 office. As a result it corrupted the code.