widget installed on the SD card is useless?

Made a widget, due Installation error: INSTALL_FAILED_INSUFFICIENT_STORAGE , added the android: installLocation = "preferExternal" < / span> installed in the SD card, but after a long on-screen pop-up widget which is not, is not a widget installed on the SD card is useless?
And my space available there 6M, arguably there is space available for installation, how will prompt Installation error: INSTALL_FAILED_INSUFFICIENT_STORAGE ?<-! Main posts under Banner (D4) -><-! Posts under the main text (D5) ->
Reply:
widget can not be installed on the sdcard, move the widget has been installed to sdcard will not cause the widget to display.
Reply:
If enough space is also suggested Installation error: INSTALL_FAILED_INSUFFICIENT_STORAGE, you can then install the adb uninstall *** about to try.