Did you install the C130 using the "Run as administrator" to install it in Win7? Right click on the csp131_1300.exe (assuming it is the C-130 X-perience All-in-One Pack), then select the "Run as administrator" from the list that pops up. When given the option to Repair or Remove, select Repair. See if that sorts it out.

As a general rule, it is not the computer itself, but probably the combination of 3rd party addon products and FSX with it's strange doings.

If, when you are in FSX and you are switching from one 3rd party addon aircraft to the CS C-130, this can cause problems. I always go from one 3rd party addon to another, by loading the default C172 in between. Like this:

Other 3rd party addon is loaded into FSX.
ALT > Aircraft > Select Aircraft > C172
After it has loaded into FSX, I set in a cold-n-dark setting. Then I check and make sure that the fuel tank selector is set to ALL.
ALT > Aircraft > Select Aircraft > CS C-130
The C-130 should work fine after doing that.

thanks for assisting guys, appreciate it.

I have tried switching to the 172 & loading the C130 first, neither seems to work for me. The fuel is an interesting thought, I am fairly sure the 'electric' systems are all fine

Cheers Dave

thanks Mark,

I will try this tonight when home from work.

thanks Dave

Yes you can. Follow the instructions in KB #685:

Q: How to reinstall a product?

A: Quite a number of "issues" are caused by using of outdated version of a product. Prior to submitting a support request please make sure you have current version of a product.

To reinstall a product please perform the following steps in exact order:
Uninstall the product:
1. Go to Start> Programs> Captain Sim.
2. Select the product you wish to uninstall.
3. Click uninstall icon.

Install the product:
4. Make sure you have the latest version of the product
5. Run the product installer (the .exe file) and follow the prompts.
Please note: valid Order Number and Internet connection are required for installation/activation.

Please make sure you run the installation file as Administrator and that "User Account Control" is disabled (for Vista and Windows7), it limits admins ability to install programs.

If regular reinstall did not fix your problem you can try to clean registry.
Please be careful and do it on your own risk!

How to clean Registry:
1. Uninstall the product
2. Go to Start> Run. Type: regedit, click OK.
3. Find the product entry in HKEY_LOCAL_MACHINE\SOFTWARE\CaptainSim\ (please note, for Windows 64bit versions it is HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\CaptainSim\)
For example: HKEY_LOCAL_MACHINE\SOFTWARE\CaptainSim\C130XPRO
Make sure you are going to delete correct folder!
4. Delete the product entry folder.
5. Restart your computer.
6. Install the product.

If you stil have issues and the above does not help we must admit your system configuration is a rare exception. You can try to install the product on another system or request a refund.

From: General / Download/Installation (QID 685)

I have attached an image to show which entry, in the registry, that needs to be deleted.