New to SH4 - blank screen on campaign mode

[VONHARRIS]

Hi , there
I am new to SH4 - (addicted to SH3 + GWX)
Any way , I wanted to try SH4 , so I installed , upgraded to v1.5 Uboot missions add on and installed the following mods:
Generic Mod Enabler - v2.6.0.157
[D:\SILENT HUNTER 4\MODS]
1_TriggerMaru_Overhaul_2-5
Ship pack 1
(1) RUIM v1.0 for SH4v1.5
(2) RUIM v1.0 for SH4v1.5 Enlisted Ranks add-on
(3) RUIM v1.0 for SH4v1.5 Awards add-on

Submarine school missions run OK
Museum OK
But when I decided to start a campaign:



I am sorry if this has been adressed elsewhere but my search came fruitless.

And another stupid question (feeling embarrased) : When - in training - I press the "man the deck gun" or "man the AA guns" nothing happens. I mean noone moves there.
Running windows 7 ultimate 64bit SP1
RAM : 4GB
Intel core 2 duo CPU E8400 @3.00GHz
NVidia GeForce GTX 460

Note that a heavily modded SH3+GWX runs perfectly on the same machine.

Thank you in advance for any help