openlayers/openlayers — comment on commit b351734cf642193b0469d0cd0bd330e90f946db4
File: lib/OpenLayers/Request/XMLHttpRequest.js line 252
By andrewshadoura:

When http://latlon.org/tt/ uses 2.11 version (or unversioned one), line 409 in [/js/tt.js](http://latlon.org/js/tt.js) causes the error in this line.

```js
OpenLayers.Request.POST({url: "/api/0.6/changeset/" + changesetid + "/upload", headers: {"Authorization": header}, data: osmchanges, success: function (o) { ... }
```

Dowgrading to 2.10 helps.