JAsk auch wenn nJ nicht einheitlich

pub/src/olm.cpp

@@ -182,18 +182,16 @@ void NOlm::JSelAsk( string quest, string *jSel, CList *jLis )
     if ( FSel.size()<=0 )
         throw string( "query scan selection: no files to operate on" );
 
-    uint nJ = MOM[FSel.V[0]].nScan();
-
     IterateEle iter;
     CEle *e;
+    uint nJmax = 0;
     while ( (e=iter()) )
-        if ( e->nScan()!=nJ )
-            throw string( "files have different numbers of scans" );
+        nJmax = max( nJmax, e->nScan() );
 
-    if ( nJ==1 )
+    if ( nJmax==1 )
         *jLis = CList("0");
     else {
         *jSel = wask( quest, *jSel );
-        *jLis = CList ( *jSel, 0, nJ-1 );
+        *jLis = CList ( *jSel, 0, nJmax-1 );
     }
 }