From Forum Nokia Wiki

Some questionable statements

The following root cause statements would require explanation and/or argumentation:

Unable to install

SECUREID is not correct (in MMP file) - any valid UID is a valid SID so what would this statement mean?

Attempting a FR,RI (in PKG file) without a Developers Certificate - such flags are simply ignored if the sis file is not signed by a trusted certificate, they do not cause the installation to fail

I hope whoever made these additions is going to bring arguments in their favor otherwise I will remove them within one week or so.

Ltomuta 23:17, 19 June 2008 (EEST)

I've seen "Unable to install" with SIS files that contain more than one executable with the same SECUREID.

--Laa-laa 16:57, 4 February 2009 (EET)

"Unable to install" is also displayed if binaries built for the emulator (WINSCW) are tried to install to the device.

--Kenley 16:59, 24 August 2009 (CET)

QUESTION: Does the new Open Symbian sourcecode website give us explicit translation of these error messages?

I'd rather have that, than this conventional-wisdom approach to error troubleshooting.

--Nick richards 03:14, 7 July 2009 (EEST)

Yes, if you have access to the source code you can see the error messages as well and trace them back to the source. But this is a great question to ask at http://developer.symbian.org

Ltomuta 09:15, 7 July 2009 (EEST)