Cakewalk relies on a proper installation of various Microsoft runtime libraries for several components (as do many other Windows programs). You can read more about the Microsoft redistributables here.
While the Cakewalk application only uses the latest runtime libraries, there are other components and plugins that may utilize earlier libraries. Hence the Cakewalk installer additionally installs some of the older versions of these libraries that are used by certain known modules and plugins.
Occasionally the Microsoft runtime libraries installation may get damaged by installing other programs (or even Windows update itself!) by installing incompatible components or removing necessary runtime components that are required for proper operation of Cakewalk. If this happens. the typical symptoms are crashes or hangs on starting Cakewalk or opening a project.
A clean install of Cakewalk will always install the necessary components required for proper operation of the program, and typically restore normal operation. However, its not always convenient to reinstall the application, so we've built a new redistributable installer to help repair a system that doesn't contain all the necessary runtime libraries. You may download the new redistributable installer here.
Running this installer will reinstall all required runtime library dependencies and should in most cases be able to recover from a damaged installation.