Wix install location appearing incorrectly as command line argument - directory

Question

I'm attempting to create an installer with wix, and I want it to behave in such a way that when the short cut is selected, it passes the install file to my programs args[], for it to use a path to execute a file.
However, I have added a few logs, and noticed that for some reason the path it is receiving is "C:\Program". I cannot get this to appear differently, even if I manually set the arguments to be the full path. Here's some snippets of the .wxs file.
<!-- Define directory structure -->
<Directory Id ="TARGETDIR" Name ="SourceDir">
<Directory Id ="ProgramFilesFolder">
<Directory Id ="MyAppsFolder" Name ="Applications">
<Directory Id ="INSTALLFOLDER" Name ="MyApp">
</Directory>
<Directory Id ="ProgramMenuFolder">
<Directory Id ="ApplicationProgramsFolder" Name="Example Folder">
<Directory Id ="ShortcutFolder" Name ="MyApp">
</Directory>
</Directory>
</Directory>
</Directory>
</Directory>
</Directory>
<!-- Creating the shortcut -->
<DirectoryRef Id ="ShortcutFolder">
<Component Id ="ApplicationShortcut" Guid="{GUID_HERE}">
<Shortcut Id ="RunMyApp"
Name ="MyApp"
Description ="Runs MyApp"
Target ="[INSTALLFOLDER]MyApp.exe"
WorkingDirectory ="INSTALLFOLDER"
Icon ="MyApp.ico"
Arguments ="[INSTALLFOLDER]FileToLoad.xml"/>
The [INSTALLFOLDER] seems to work for everything else but this last line in the arguments.
Thanks in advance

Answer 1

It's a well-known behavior, WiX doesn't know what your arguments are then it doesn't quote them. Note that [INSTALLFOLDER] will be expanded during installation to (for example) c:\program files\your app, it's like you execute your application from command line with this syntax:
MyApp c:\program files\your app
Note that your application will have { "c:\\program", "files\\your", "app" }.
Just quote your path explicitly:
<Shortcut Id ="RunMyApp"
Name ="MyApp"
Description ="Runs MyApp"
Target ="[INSTALLFOLDER]MyApp.exe"
WorkingDirectory ="INSTALLFOLDER"
Icon ="MyApp.ico"
Arguments =""[INSTALLFOLDER]FileToLoad.xml""/>
It'll result in "c:\program files\your app\FileToLoad.xml" and command line parser will recognize it as a single argument. Note " character entity reference, for a complete list you may refer to List of XML and HTML character entity references.

Answer 2

I've found that by remove the [INSTALLFOLDER], it worked just fine. The line now looks like this:
Arguments ="[INSTALLFOLDER]FileToLoad.xml"/>
I have noticed it may be because the working directory is already set to INSTALLFOLDER, although I'm not sure.