Step 1:
- Go to start and in search bar type in REGEDIT and open it !

Step 2:
- Go to HKEY_LOCAL_MACHINE ------> SOFTWARE ------- >Classes ------- > dromjmfile


Step 3:
- DELETE "dromjmfile " file
Windows System Requirements
- Microsoft Windows XP SP3, Windows Vista, Windows 7, or Windows 8
- Microsoft DirectX 9 or later version
- Microsoft .NET 4.0 Client Profile (included, except with MSI installer)
- Dual-Core Processor minimum, Quad-Core Processor or better recommended
- 2GB RAM minimum, 4GB RAM or greater recommended
- 2GB of hard-disk space for program installation
- Display dimensions of 1024x768 or greater
- Dedicated Windows-compatible sound card, microphone and speakers recommended
- Camtasia Studio Add-in for PowerPoint requires PowerPoint 2007 (32-bit) or 2010 or 2013 (32-bit or 64-bit)
- Import of .mov and production to .mov and .m4v requires Apple QuickTime 7.2 or later
- Camera video recording requires a USB Web camera. Recording live from a DV camera is not supported
- Integration with Camtasia Relay requires Camtasia Relay Client Recorder
- GPU acceleration requires DirectX 9 compatible video adapter with 128 MB of video memory or greater and Pixel Shader 2.0 or later
Mac OS X System Requirements
- Mac computer with an Intel processor ~ Recommended: dual core 2.0GHz or faster
- Mac OS X v10.6.6 or later
- Quartz Extreme support (rendering is not supported on external USB monitors
- 2GB of RAM ~ Recommended: 4GB of RAM or greater
- 4GB of available disk space (minimum)
- QuickTime X or later