VS 2010 Bootstrapper package - visual-studio-2010

Question

I'm trying to create bootstrapper package for Visual Studio 2010. It has appeared in prerequisites window. Here is my product.xml
<?xml version="1.0" encoding="utf-8"?>
<Product ProductCode="FaroLS" xmlns="http://schemas.microsoft.com/developer/2004/01/bootstrapper">
<PackageFiles CopyAllPackageFiles="true">
<PackageFile Name="faro ls 5.2.0.35213 x64 setup.exe" />
<PackageFile Name="example.faro.ls.exe.manifest" />
<PackageFile Name="faro.ls_5.2.0.35213.msi" />
<PackageFile Name="farolsdemoscans.zip" />
<PackageFile Name="faroopendemoapp.zip" />
<PackageFile Name="farosdkdemoapp.zip" />
<PackageFile Name="unins000.dat" />
<PackageFile Name="unins000.exe" />
<PackageFile Name="vcredist_x64.exe" />
<PackageFile Name="vcredist_x64_90.exe" />
</PackageFiles>
<InstallChecks>
<RegistryCheck Property="IsInstalled" Key="HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\FARO LS_is1\" Value="Inno Setup: Setup Version"/>
</InstallChecks>
<Commands Reboot="Defer">
<Command PackageFile="faro ls 5.2.0.35213 x64 setup.exe">
<InstallConditions>
<BypassIf Property="IsInstalled" Compare="VersionGreaterThanOrEqualTo" Value="5.1.6" />
</InstallConditions>
<ExitCodes>
<DefaultExitCode Result="Fail" String="Anunexpectedexitcodewasr" FormatMessageFromSystem="true" />
</ExitCodes>
</Command>
</Commands>
</Product>
File example.faro.ls.exe.manifest
<?xml version="1.0" encoding="utf-8"?>
<assembly xmlns='urn:schemas-microsoft-com:asm.v1' manifestVersion='1.0'>
<dependency>
<dependentAssembly>
<assemblyIdentity type='win32' name='FARO.LS' version='1.1.502.0' processorArchitecture='amd64' publicKeyToken="1d23f5635ba800ab"/>
</dependentAssembly>
</dependency>
</assembly>
To determine whether i have already installed this product i'm checking registry entry
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\FARO LS_is1\Inno Setup: Setup Version
And now the bad things. Registry check does not work. Every time i launch product setup it asks me to install additional component, even if it is already installed.
And when installation starts i get error:
Setup has detected that the file 'C:\Users\user\AppData\Local\Temp\VSD1F0C.tmp\FaroLS\faro ls 5.2.0.35213 x64 setup.exe'
has either changed since it was initially published or may be corrupt.
See the setup log file located at
'C:\Users\user\AppData\Local\Temp\VSD1F0C.tmp\install.log' for more information.
I found some similar topics on stackoverflow, where .net 4.5 caused this problem. But i don't have one installed.
File faro ls 5.2.0.35213 x64 setup.exe does not have digital signature. Can it cause errors? Are there any ways to make it work?