Hello! im new to the forum. 
im having an issue..
ive made many designs in the past and sliced them on cura and never had any issues until today. im not sure if this is a settings or model issue. when i upload the model to cura everything looks good in the solid view, but then when i slice it and review the layer view there are whole sections missing, even when i add supports or remove. im going to add photos. any ideas?