Nobody can tell you anything. You have not provided any system info, no version info for AE, no details about your project and not the exact error message. You know, those cute numbers mean something.
Sorry about that. I have both Adobe after effects cc 2014 and 2015 and get the same error message on both.
Mac (21.5-inch, Mid 2011)
2.5 GHz Intel Core i5,
8 GB 1333 MHz DDR3
MD Radeon HD 6750M 512 MB
1080P 30fps, MP4 video that was previsously edited on imovie
Exact message is"internal verification failure, sorry child not found in parent"
Hopefully this helps you out....
We still don't know anything about your project.