FileOpener_setup.exe has been marked as a potentially unwanted file by many pieces of security software. If you want to download and install PdaNet Desktop with this tool, I recommend you delete it and download and install the software manually from the official web page. If not, scan the FileOpener package using your antivirus program or a utility from the database of Software Informer. Also, you can use an online service like VirusTotal. If the package is safe and you want to open it, temporarily disable your security software and launch it.