android 'app not installed' error. how to debug?

Question

i have developed an app in eclipse, so today i made an apk (made the keystore and all that)

i put it on my website and downloaded it to my samsung GT7300 running 4.0.4 and it installs and runs fine.

now i just tried to install on my no name Chinese tablet running 4.2.2 and i get 'app not installed' every time.

i enabled unknown source of course, is there anything else i could have missed?

when i get the 'app not installed' message, there is no explanation of any kind. is there an installer log or something where i can find the problem?

if anyone would care to try install for me, its at http://www.2112design.com/fbmstools/ and the file is fbms_lmfd.apk

maybe i'm no supposed to post that, don't know

thanks for any help, this is driving me nuts!

by the way, i read this 'App not Installed' Error on Android and non of those suggestions helped

i connected the debug cable to the device and it installs and runs fine through adb.

so i created a blank application and made an apk and put on my website, then download to tablet and it installs fine. so i guess there is something wrong with my real app, but the manifests are basically the same.

android:versionCode="1"
android:versionName="1.0" >

<uses-sdk
    android:minSdkVersion="14"
    android:targetSdkVersion="15" />

so i installed a logcat view on the tablet, and when i try install from the apk i get a couple of error messages

Package ..... has no certificates at entry AndroidManifest.xml: ignoring

then

Installation error code: -103

Answer 1

Install the apk using adb install apkname.apk. Adb shows the error that happened on the console.