A controversial decision by managers of Carson City’s only movie theater to ban unaccompanied minors at some nighttime screenings seems to have solved several emerging problems at the multiplex, Casino Fandago General Manager Court Cardinal said Monday. On Feb. 15, Galaxy Fandango 10 announced that no one under 18 would be allowed to enter the premises on Fridays and Saturdays after 6 p.m. without a guardian present. The rule came after weeks of complaints from customers that unsupervised…