I have found an interesting bug on ColdFusion 8 and the multi-threaded capabilities of ColdBox. This is only to specific coldbox installation setups: 1) Virtual Folder in IIS 2) Apache Alias If you use an alias or a virtual folder for installing coldbox, you will run into errors that the spawned threads will not be able to actually find the instantiation paths. Example: coldbox.system.beans.requestContext It seems that the coldfusion 8 spawned thread cannot find or use the virtual aliases or apache aliases. So if I cannot find a solution, which seems like I won't be able to. Then I will remove the installation type of aliases and virtual directories for colfusion 8 and bluedragon 7. It seems that the installation procedures will have to remain as physical folders or coldfusion mappings only. Please test this and let me know your results.