Moviestorm crashes on my laptop when on battery power.

Most modern laptops have 2 GPUs, a low power GPU for when the laptop is running on battery, and a high power GPU for when running on mains power.
The low power GPU will most likely not support the features that Moviestorm requires, meaning that Moviestorm will crash (exit unexpectedly) when your laptop is running on battery power.
To prevent this from happening, please make sure that you use your computer's high power graphics processor when using Moviestorm, even when running your laptop on battery power. Your computer's graphics options can usually be accessed by right-clicking anywhere on the desktop.