modelsim联合vivado仿真问题请教

FrankDi

vivado已经编译了modelsim库，在仿真时对一个乘法器Ip编译出现问题：Error: e:/code/lpaq1.0_right/lpaq1.0.srcs/sources_1/ip/Mul/mult_gen_v12_0/hdl/dsp.vhd(1380)): in protected region.
# ** Error: e:/code/lpaq1.0_right/lpaq1.0.srcs/sources_1/ip/Mul/mult_gen_v12_0/hdl/dsp.vhd(1698)): in protected region.
# ** Error: e:/code/lpaq1.0_right/lpaq1.0.srcs/sources_1/ip/Mul/mult_gen_v12_0/hdl/dsp.vhd(2836)): in protected region.
# ** Error: D:/modeltech64_10.2c/win64/vcom failed.



在sim.do文件中添加Ip核库文件是这样添加的：
vcom   
../ip/Mul/sim/*.vhd
vcom  
    ../ip/Mul_err/sim/*.vhd
vlog  -incr ../ip/CACHEDATA/sim/*.v
vlog  -incr ../ip/CACHETABLE/sim/*.v
vlog  -incr ../ip/BufSym/sim/*.v
vlog  -incr ../ip/Calcfails_ROM/sim/*.v
vlog  -incr ../ip/Calcpre/sim/*.v


其他的ip核都没有报错，唯有这个mul乘法器报错，想请教下这个问题该怎么解决