Index: class.t3lib_tceforms_suggest.php
===================================================================
--- class.t3lib_tceforms_suggest.php	(revision 82026)
+++ class.t3lib_tceforms_suggest.php	(working copy)
@@ -63,6 +63,13 @@
 
 		$containerCssClass = $this->cssClass . ' ' . $this->cssClass . '-position-right';
 		$suggestId = 'suggest-' . $table . '-' . $field . '-' . $row['uid'];
+		
+		if ('flex' === $GLOBALS['TCA'][$table]['columns'][$field]['config']['type']) {
+			$fieldPattern = 'data[' . $table . '][' . $row['uid'] . '][';
+			$flexformField = str_replace($fieldPattern, '', $fieldname);
+			$flexformField = substr($flexformField, 0, -1);
+			$field = str_replace(array(']['), '|', $flexformField);
+		}
 
 		$selector = '
 		<div class="' . $containerCssClass . '" id="' . $suggestId . '">
@@ -129,12 +136,38 @@
 		$TSconfig = t3lib_BEfunc::getPagesTSconfig($pageId);
 		$queryTables = array();
 		$foreign_table_where = '';
-		$wizardConfig = $GLOBALS['TCA'][$table]['columns'][$field]['config']['wizards']['suggest'];
-		if (isset($GLOBALS['TCA'][$table]['columns'][$field]['config']['allowed'])) {
-			$queryTables = t3lib_div::trimExplode(',', $GLOBALS['TCA'][$table]['columns'][$field]['config']['allowed']);
-		} elseif (isset($GLOBALS['TCA'][$table]['columns'][$field]['config']['foreign_table'])) {
-			$queryTables = array($GLOBALS['TCA'][$table]['columns'][$field]['config']['foreign_table']);
-			$foreign_table_where = $GLOBALS['TCA'][$table]['columns'][$field]['config']['foreign_table_where'];
+
+		$fieldConfig = $GLOBALS['TCA'][$table]['columns'][$field]['config'];
+		
+		$parts = explode('|', $field);
+		if ('flex' === $GLOBALS['TCA'][$table]['columns'][$parts[0]]['config']['type']) {
+			if (is_array($row) && (0 < count($row))) {
+				$flexfieldTCAConfig = $GLOBALS['TCA'][$table]['columns'][$parts[0]]['config'];
+				$flexformDSArray = t3lib_BEfunc::getFlexFormDS($flexfieldTCAConfig, $row, $table);
+				$flexformDSArray = t3lib_div::resolveAllSheetsInDS($flexformDSArray);
+				$flexformElement = $parts[count($parts)-2];
+				$continue = true;
+				foreach ($flexformDSArray as $sheet ) {
+					foreach ($sheet as $sheetId => $dataStructure) {
+						if (isset($dataStructure['ROOT']['el'][$flexformElement]['TCEforms']['config'])) {
+							$fieldConfig = $dataStructure['ROOT']['el'][$flexformElement]['TCEforms']['config'];
+							$continue = false;
+							break;
+						}
+					}
+					if (!$continue) break;
+				}
+				$field = str_replace('|', '][', $field);
+			}
+		}
+		
+		$wizardConfig = $fieldConfig['wizards']['suggest'];
+		
+		if (isset($fieldConfig['allowed'])) {
+			$queryTables = t3lib_div::trimExplode(',', $fieldConfig['allowed']);
+		} elseif (isset($fieldConfig['foreign_table'])) {
+			$queryTables = array($fieldConfig['foreign_table']);
+			$foreign_table_where = $fieldConfig['foreign_table_where'];
 				// strip ORDER BY clause
 			$foreign_table_where = trim(preg_replace('/ORDER[[:space:]]+BY.*/i', '', $foreign_table_where));
 		}