Workaround for the application cannot be added after the SharePoint 2013 master page has been modified

Problem description: Some time ago to try to convert HTML files to master pages, but with the use of new problems, we converted the master page, set to the default master page, cannot add the application, only a dialog box has been loaded. We copied our own master page, and after we modified HTML Sync master, we couldn't add the application. The following figure:

(Always show the "Loading" interface)

(normal Add the application's page)

I thought about where the problem might be, because I was the master page I converted, so I took a copy of my own master page and then used the generated master page as the default master page and found no problem. However, when I modified the HTML file, the master file associated with it was naturally modified, and then there was the problem of not adding the application.

In comprehensive testing, it is not a problem in the process of generating a master page, but rather, when we modify HTML, SharePoint2013 automatically modifies master when the master page appears to have an exception. Because of this problem, we recommend that if you want to generate a master page through an HTML file, make a copy of the master page at a later time, and then break the associated delete HTML file. Unless you are afraid to change the bad, first leave the HTML file, because the random modification of the HTML file saved, master file will return to the original location.

Well, the front pile is almost equal to nonsense, let's find out, where the problem happened! In fact, the problem is very simple, just compare two files, where different, and then cover back to try on it, just more time and loss of eyesight. So no technical content of the work, I will not nonsense, talk about my ideas.

First of all, I suspect that there is a problem with the head reference, which covers all the heads and finds no meaning. Then, suspected body parts have problems, still all covered, found OK. That's great, so I narrowed it down to the body. Then look inside a few of the larger Div test, found that <div id= "S4-workspace" > This has a problem, the following introduces a relatively good tool notepad++, this thing can help me, especially about colleagues rolling contrast, or good, Much better than a Notepad file.