Hi Gang,
This is my input file for 3dLME.R:

Data:Volume
Output:3dlme.out
MASK:JHU_2m_lps_mask+orig
Model:Age+Group*Scan
COV:Age
RanEff:1
VarStr:0
CorStr:0
SS:sequential
Clusters:1
Normal-MCI
0*Normal*0-0*Dis*0
Subj Age Group Scan InputFile
AA 82.24 Normal I /path/AA_I+orig
AA 83.25 Normal II /path/AA_II+orig
AA 84.4 Normal III /path/AA_III+orig
AF 82.13 Dis I /path/AF_I+orig
AF 83.7 Dis II /path/AF_II+orig
AJ 80.94 Normal I /path/AJ_I+orig
AJ 82.7 Normal II /path/AJ_II+orig
AJ 83.47 Normal III /path/AJ_III+orig
AO 82.93 Normal I /path/AO_I+orig
AO 84.29 Normal II /path/AO_II+orig
...

I always get this error:
[1] "Insoluble model! Formula Age+Group*Scan on the 4th line in model.txt"
[1] "might be inappropriate, or there are incorrect specifications in model.txt"
[1] "such as contrasts, factor levels, or other obscure problems."
Error: no loop to break from, jumping to top level
Execution halted

Any ideas on what might be wrong?
Thanks,
Stathis