ClassCast Exception when unmarshalling

There is the stack trace I obtained when unmarshalling a JiBX generated XML document:
java.lang.ClassCastException
at com.actualis.sage.DocumentVte.JiBX_xml_bindings_unmarshal_2_0(DocumentVte.java)
at com.actualis.sage.JiBX_xml_bindingsDocumentVte_access.unmarshal()
at org.jibx.runtime.impl.UnmarshallingContext.unmarshalElement(UnmarshallingContext.java:2568)
at com.actualis.sage.JiBX_MungeAdapter.JiBX_xml_bindings_unmarshal_1_0()
at com.actualis.sage.DocumentsVte.JiBX_xml_bindings_unmarshal_3_1(DocumentsVte.java)
at com.actualis.sage.JiBX_xml_bindingsDocumentsVte_access.unmarshal()
at org.jibx.runtime.impl.UnmarshallingContext.unmarshalElement(UnmarshallingContext.java:2568)
at org.jibx.runtime.impl.UnmarshallingContext.unmarshalDocument(UnmarshallingContext.java:2736)
at com.actualis.ExportManager.readZipVector(ExportManager.java:162)
at com.actualis.SageDB.importFromFile(SageDB.java:144)

And there an excerpt of the source code:
public String DO_Piece;
public Timestamp DO_Date;
public String DO_Ref = "";
public Timestamp DO_DateLivr;
public String DO_Tiers;
public int DE_No = 1;
public long LI_No = 1;
public long lieu_livraison_tmp = -1;
public long lieu_enlevement = -1;
public int DO_Period = 1;
public int DO_Devise = 0;
public static final String[] DEVISES =

;
public double DO_Cours;
public String CT_NumPayeur;
public int DO_Expedit;
public int DO_Condition = 1;
public int DO_Langue = 1;
public int RE_No = 0;
public String DO_Coord01 = "";
public String DO_Coord02 = "";
public String DO_Coord03 = "";
public String DO_Coord04 = "";
public String affaire = "";
public int DO_Tarif;
public int DO_Regime = 21;
public int DO_Transaction = 11;
public int DO_Colisage = 1;
public int DO_TypeColis = 1;
public int nb_factures = 1;
public boolean UnSeul_BL_Fac = false;
public double DO_TxEscompte = 0;
public double ecart_valorisation = 0;
public int N_CatCompta = 1;
public boolean frais_ventile = false;
public int DO_Statut = 0;
public String compte_general = "";
public boolean DO_Cloture = false;
public String id_cmd_inet = "";
public String ip_address = null;

at com.actualis.sage.SageLANGateway.importFiles(SageLANGateway.java:118)
at com.actualis.sage.SageLANGateway.exec_imports(SageLANGateway.java:90)
at com.actualis.sage.SageLANGateway.start(SageLANGateway.java:50)
at com.actualis.LANGateway.exec(LANGateway.java:132)
at com.actualis.sage.SageLANGateway.main(SageLANGateway.java:132)

Here is the output of the compiler on my class:
[bind] mapping class com.actualis.sage.DocumentsVte to element DocumentsVteList
[bind] element wrapper DocumentsVteList
[bind] object binding for com.actualis.sage.DocumentsVte
[bind] structure ordered
[bind] mapping reference to com.actualis.ActualisBOFlags using optional property m_flags (com.actualis.ActualisBOFlags)
[bind] optional structure wrapper property m_list (java.util.ArrayList) (load marshal)
[bind] element wrapper DocumentsVte optional structure object
[bind] component property m_list (java.util.ArrayList) (pass-through marshal)
[bind] object binding for java.util.ArrayList
[bind] collection ordered
[bind] direct generic reference

and

[bind] mapping class com.actualis.sage.DocumentVte to element DocumentVte
[bind] element wrapper DocumentVte
[bind] object binding for com.actualis.sage.DocumentVte
[bind] structure ordered
[bind] element sync_state from optional property sync_state (int)
[bind] element UID from optional property UID (long)
[bind] element DO_Type from optional property DO_Type (int)
[bind] element DO_Piece from optional property DO_Piece (java.lang.String)
[bind] element DO_Date from optional property DO_Date (java.sql.Timestamp)
[bind] element DO_Ref from optional property DO_Ref (java.lang.String)
[bind] element DO_DateLivr from optional property DO_DateLivr (java.sql.Timestamp)
[bind] element DO_Tiers from optional property DO_Tiers (java.lang.String)
[bind] element DE_No from optional property DE_No (int)
[bind] element LI_No from optional property LI_No (long)
[bind] element lieu_livraison_tmp from optional property lieu_livraison_tmp (long)
[bind] element lieu_enlevement from optional property lieu_enlevement (long)
[bind] element DO_Period from optional property DO_Period (int)
[bind] element DO_Devise from optional property DO_Devise (int)
[bind] element DO_Cours from optional property DO_Cours (double)
[bind] element CT_NumPayeur from optional property CT_NumPayeur (java.lang.String)
[bind] element DO_Expedit from optional property DO_Expedit (int)
[bind] element DO_Condition from optional property DO_Condition (int)
[bind] element DO_Langue from optional property DO_Langue (int)
[bind] element RE_No from optional property RE_No (int)
[bind] element DO_Coord01 from optional property DO_Coord01 (java.lang.String)
[bind] element DO_Coord02 from optional property DO_Coord02 (java.lang.String)
[bind] element DO_Coord03 from optional property DO_Coord03 (java.lang.String)
[bind] element DO_Coord04 from optional property DO_Coord04 (java.lang.String)
[bind] element affaire from optional property affaire (java.lang.String)
[bind] element DO_Tarif from optional property DO_Tarif (int)
[bind] element DO_Regime from optional property DO_Regime (int)
[bind] element DO_Transaction from optional property DO_Transaction (int)
[bind] element DO_Colisage from optional property DO_Colisage (int)
[bind] element DO_TypeColis from optional property DO_TypeColis (int)
[bind] element nb_factures from optional property nb_factures (int)
[bind] element UnSeul_BL_Fac from optional property UnSeul_BL_Fac (boolean)
[bind] element DO_TxEscompte from optional property DO_TxEscompte (double)
[bind] element ecart_valorisation from optional property ecart_valorisation (double)
[bind] element N_CatCompta from optional property N_CatCompta (int)
[bind] element frais_ventile from optional property frais_ventile (boolean)
[bind] element DO_Statut from optional property DO_Statut (int)
[bind] element compte_general from optional property compte_general (java.lang.String)
[bind] element DO_Cloture from optional property DO_Cloture (boolean)
[bind] element id_cmd_inet from optional property id_cmd_inet (java.lang.String)