Possible compatibility between MS Office 2010 and MS Office 2013

[Pookiemeister]

On my home p.c. I have MS Office 2010 but at work we have MS Office 2013. So at home I created a Userform and the code works. However, when I send it to my work email through Outlook 2010, when I open it up at work the first thing I noticed, it's a read only file. So in Excel 2010 I clicked
Save As ---->Tools---->General Options
and noticed that the "Read-only recommended" is NOT checked. So I have no idea how this happening. Any help would be greatly appreciated.

Thank You

 

[MARK858]

Have you tried saving it on the 2013 machine as a different file name (obviously with the read only not checked), then closing it and reopening it?