I have been having many challenges getting my excel macro's to run on Apple; my latest challenge is that my macro runs perfectly on my PC but when it is run on my client's Mac (with Excel for Mac 2011) the userform does not load. The code to load the userform is in the workbook open event. It also runs perfectly on my Apple (also loaded with Excel for Mac 2011), but on my client's Mac it does not load, it doesn't error either, it just opens and does not show the userform or any type of warning. There is only 1 userform in the file and everything triggers from buttons and comboboxes on this userform. The perplexing part is that i have build other macro's for Apple users that have userforms triggered from the workbook open event that work fine. Please help! I have been searching the net for days trying to resolve this