Hello, first time forum user. After updating to Vassal 3.5.4 and loading a C&C Napoleonics Spanish scenario I found the Command Card deck and lettering to disappear once the 90 card option was selected and the same for the Tactical deck. Selecting the undo arrow brought the decks back only to have them disappear again. Since then I have loaded a Tricorne Jacobite Rising game which played normally.
I use an HP Pavilion All-In-One Desktop running Windows 10 64 bit with 12GM of memory, an AMD Radeon R7 video card and Java version 8. Vassal is 3.5.4, Napoleonics version 3.42.
Gary Duden