Hi, Just started to review i-doit. So far looks very good. However, I am suffering with the same issue that OP was suffering from: I can create building locations under the 'Root-Lokation' - this is OK I cannot associate any room with any building that is created. I have tried: 1 - selecting the name of the building from the location pop-up (BTW the buttons in the pop-up do not translate to English) the selected location does not pass back to the main entry screen for the Room. 2 - tried typing in the name - again this is not saved 3 - tried typing in the first few characters of a location, and then selecting the location that appeared beneath the field. this caused a very interesting result of placing code into the field and then redirecting me to the page for the building. I tried this against Chrome, IE and firefox and I get the same result. I tried the on-line Pro version and this works perfectly although i notice that this is not the same version as the opensource version. it would be really good to be able to resolve this issue so that our review could continue.