Open .ui file from Linux on Windows - qt

Question

My colleague created a C++ Qt Project on Linux and I "transposed" it on Windows. Now, I am a functional GUI but I don't know why, when I open the .ui file with QtDesigner, the file is empty, all widgets disappeared.
Any idea how to get back my widgets or is it only because the file was created on QtDesigner on Linux ?
Here is a part of the ui file opened on Windows with a text editor:
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>MainWindow</class>
<widget class="QMainWindow" name="MainWindow">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>874</width>
<height>497</height>
</rect>
</property>
<property name="windowTitle">
<string>MainWindow</string>
</property>
<widget class="QWidget" name="centralwidget">
<widget class="QTabWidget" name="tabWidget">
<property name="geometry">
<rect>
<x>20</x>
<y>110</y>
<width>541</width>
<height>331</height>
</rect>
</property>
<property name="maximumSize">
<size>
<width>860</width>
<height>700</height>
</size>
</property>
<property name="currentIndex">
<number>1</number>
</property>
<widget class="QWidget" name="buildMotionTab_3">
<attribute name="title">
<string>Tab 1</string>
</attribute>
<widget class="QFrame" name="centralFrame_3">
<property name="geometry">
<rect>
<x>-10</x>
<y>0</y>
<width>860</width>
<height>851</height>
</rect>
</property>
<property name="sizePolicy">
<sizepolicy hsizetype="Fixed" vsizetype="Fixed">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="minimumSize">
<size>
<width>860</width>
<height>851</height>
</size>
</property>
<property name="maximumSize">
<size>
<width>810</width>
<height>851</height>
</size>
</property>
<property name="frameShape">
<enum>QFrame::StyledPanel</enum>
</property>
<property name="frameShadow">
<enum>QFrame::Raised</enum>
</property>
<widget class="QFrame" name="motorFrameP_3">
<property name="geometry">
<rect>
<x>260</x>
<y>10</y>
<width>281</width>
<height>280</height>
</rect>
</property>
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Minimum">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="minimumSize">
<size>
<width>250</width>
<height>280</height>
</size>
</property>
<property name="maximumSize">
<size>
<width>300</width>
<height>280</height>
</size>
</property>
<property name="frameShape">
<enum>QFrame::StyledPanel</enum>
</property>
<property name="frameShadow">
<enum>QFrame::Raised</enum>
</property>
<widget class="QSpinBox" name="LineDist">
<property name="geometry">
<rect>
<x>190</x>
<y>150</y>
<width>81</width>
<height>32</height>
</rect>
</property>
<property name="minimum">
<number>1</number>
</property>
<property name="maximum">
<number>470</number>
</property>
<property name="singleStep">
<number>1</number>
</property>
<property name="value">
<number>50</number>
</property>
</widget>
[...]
<widget class="QPushButton" name="StandDownButton">
<property name="geometry">
<rect>
<x>20</x>
<y>30</y>
<width>101</width>
<height>31</height>
</rect>
</property>
<property name="text">
<string>StandDown</string>
</property>
</widget>
<widget class="QPushButton" name="Homing1Button">
<property name="geometry">
<rect>
<x>120</x>
<y>70</y>
<width>101</width>
<height>31</height>
</rect>
</property>
<property name="text">
<string>Homing X</string>
</property>
</widget>
</widget>
<widget class="QMenuBar" name="menubar">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>874</width>
<height>25</height>
</rect>
</property>
</widget>
<widget class="QStatusBar" name="statusbar"/>
</widget>
<resources/>
<connections/>
</ui>

Answer 1

Looks like some thing went wrong in transporting the file (I can't say, but could be copy was done in binary mode? or some lines were not expanded in case you copied and pasted the text ..)
The ui xml you shared is broken at line 127 where it shows [...] which is not valid, in place of this it should show closing xml tags for </widget> , I think 4 closing tags </widget> are missing, then it should be ok.