Hello Dimitar Venkov,
I don’t think our last Stable build is one month old. We had some issues while switching between our installers and recent internal restructure, but we addressed most of the crashes reported by users and our internal QA. Specially the renaming of node and loading of previously saved file was not able to edit in new version.
I use latest build always and today I am using this build DynamoInstall0.7.1.20140824T2204.exe (0.7.1.29078 build number from About dialog) and everything working for me.
Installer size reduced to 28MB is expected because of our internal restructure.
Can you please uninstall our 0.7 version Dynamo and delete files manually from “C:\Program Files\Dynamo 0.7” folder and then install latest daily build and try out.
Meanwhile I will try to reproduce your problem.