I have just downloaded the file and installed on my N950 without problems. Looks like you're using Inception right? I'm using open mode but I really don't think that this should be a problem. I see that inception fakes the signature to com.nokia.maemo/local and libmeegotouch has signature com.nokia.maemo. Do you know if you can change the fake signature to match "com.nokia.maemo"? But again, I don't know if that's the problem. You can install unrestricted-ui, which is also a system package, using inception afaik. (one last question, what's the md5 you getting from the package? Mine is: 0bce3803e158869ede06d8efc1ee9432 libmeegotouchcore0_0.24.20-1+0m7_armel.deb )