Mongoose doesn't contain any malicious logic. Antivirus reports a false positive. This is when certain byte sequence in Mongoose accidentally matches virus signature in the Antivirus database.
Please make sure Javascript is enabled in your browser, and that the antivirus software is not blocking the download.
This happens on newer MacOS systems. The reason for the message is the fact Mongoose.app is not digitally signed. Mongoose download procedure changes the app on the fly by injecting user information in the binary, making any prior digital signature void. Open "System Preferences" -> "Security" and set "Allow apps downloaded from" to "Anywhere". Revert the settings once Mongoose is installed.
The reason for that is wrong paths to the interpreter. Remember that with PHP,
correct interpreter is php-cgi.exe (php-cgi on UNIX). Solution: specify
full path to the PHP interpreter, e.g.:
mongoose -cgi_interpreter /full/path/to/php-cgi
If Mongoose exits immediately when run, this
usually indicates a syntax error in the configuration file
(named mongoose.conf by default) or the command-line arguments.
Syntax checking is omitted from Mongoose to keep its size low. However,
the Manual should be of help. Note: the syntax changes from time to time,
so updating the config file might be necessary after executable update.
To force Mongoose to use __stdcall convention, add /Gz compilation
flag to the Visual Studio project settings.