Hey there! What a great project! As mentioned before, we are absolutely thrilled by Processwire. Coming from MODX Revolution Processwire is now declared to be the system of choice to build all new websites for our customers. After some smaller projects, which we will present in the Showcase-Forum later on, we are currently building our first large project using processwire. The main challenge here is, that we have to use a Microsoft IIS Webserver with ISAPI Rewrite Version 3.1.0.96. The installation went fine, after tuning up the .htaccess-File like mentioned in the following thread: http://processwire.com/talk/topic/766-isapi-rewrite-3-on-iis/ Processwire obviously is running like always. But the further we went on in the configuration of processwire to the needs of the project, there are some issues which we are not able to solve. And these issues make us feel uncomfortable to the upcoming development of this large project, because we don't know what other challenges will come up. It would give us confidence if everything runs fine from the ground up. Currently there are the following issues: - Admin Theme is not recognized We installed the "Teflon Admin Theme" in the common way, but PW is still using the standard theme. - Not able to upload Language Pack After implementing the Language Support Module and the language.zip file can not be uploaded. PW shows the upload status bar, but after 100% are reached the field is empty. Testing the issue with an easy field "file" on a page, the upload of a jpg works fine. - Page order is not saved If we sort the pages in the Admin by using the move function, the new order is not saved. After logging in and out the pages have the old order. If IIS is not the reason for these issues, we would also be glad for help. We didn't find anything on these topics in the forums. We hope some of you will have experience in using IIS and will help us getting this project to be a hugh success. Be sure that we share all our experience in this thread. Perhaps this will be a great help to all who have to use Microsoft IIS in the future. Thank you so much for your support.