Check the version of KaleidaGraph and update if needed Visit KaleidaGraph website and download the installer. One of the most risk-free method of downloading software is using links provided by official distributors. It is that easy On the top of the page a list that contains all programs grouped based on operating systems supported can be found. To address this issue, go to the KaleidaGraph developer website, download the tool, and install it. The most common reason for such problems is the lack of proper applications that supports QPL files installed on the system. The following is a list of guidelines that will help you identify and solve file-related problems. Fortunately, most common problems with QPL files can be solved without in-depth IT knowledge, and most importantly, in a matter of minutes. Problems with accessing QPL may be due to various reasons.