Does your computer or laptop meet the RPG Maker VX Ace specs? If so then the only other thing I can offer for you to do is to just wait a few minutes for the graphics to import. Sometimes my laptop says "Has Stopped Responding" when I'm importing a lot of graphics. Give it some time whilst importing and see what happens.
These are my specs
Summary
Operating System
Windows 10 Pro 64-bit
CPU
Intel Core i7 4770K @ 3.50GHz 44 °C
Haswell 22nm Technology
RAM
16,0GB Dual-Channel DDR3 @ 798MHz (11-11-11-28)
Motherboard
ASUSTeK COMPUTER INC. B85M-E (SOCKET 1150) 27 °C
Graphics
BenQ DL2215 (1920x1080@60Hz)
S22B300 (1920x1080@60Hz)
4095MB NVIDIA GeForce GTX 970 (ZOTAC International) 34 °C
Storage
111GB Samsung SSD 840 EVO 120GB (SSD) 31 °C
2794GB Seagate ST3000DM001-1CH166 (SATA) 35 °C
465GB Seagate ST500DM002-1BD142 (SATA) 35 °C
Optical Drives
HL-DT-ST BDDVDRW GGC-H20N
If RPG Maker VX Ace needs more, I'll eat my butt.